Mahanoy Area School Dist. v. B. L. ( 2021 )


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  • (Slip Opinion)              OCTOBER TERM, 2020                                       1
    Syllabus
    NOTE: Where it is feasible, a syllabus (headnote) will be released, as is
    being done in connection with this case, at the time the opinion is issued.
    The syllabus constitutes no part of the opinion of the Court but has been
    prepared by the Reporter of Decisions for the convenience of the reader.
    See United States v. Detroit Timber & Lumber Co., 
    200 U. S. 321
    , 337.
    SUPREME COURT OF THE UNITED STATES
    Syllabus
    MAHANOY AREA SCHOOL DISTRICT v. B. L., A MINOR,
    BY AND THROUGH HER FATHER, LEVY, ET AL.
    CERTIORARI TO THE UNITED STATES COURT OF APPEALS FOR
    THE THIRD CIRCUIT
    No. 20–255.      Argued April 28, 2021—Decided June 23, 2021
    Mahanoy Area High School student B. L. failed to make the school’s var-
    sity cheerleading squad. While visiting a local convenience store over
    the weekend, B. L. posted two images on Snapchat, a social media ap-
    plication for smartphones that allows users to share temporary images
    with selected friends. B. L.’s posts expressed frustration with the
    school and the school’s cheerleading squad, and one contained vulgar
    language and gestures. When school officials learned of the posts, they
    suspended B. L. from the junior varsity cheerleading squad for the up-
    coming year. After unsuccessfully seeking to reverse that punishment,
    B. L. and her parents sought relief in federal court, arguing inter alia
    that punishing B. L. for her speech violated the First Amendment. The
    District Court granted an injunction ordering the school to reinstate
    B. L. to the cheerleading team. Relying on Tinker v. Des Moines Inde-
    pendent Community School Dist., 
    393 U. S. 503
    , to grant B. L.’s subse-
    quent motion for summary judgment, the District Court found that
    B. L.’s punishment violated the First Amendment because her Snap-
    chat posts had not caused substantial disruption at the school. The
    Third Circuit affirmed the judgment, but the panel majority reasoned
    that Tinker did not apply because schools had no special license to reg-
    ulate student speech occurring off campus.
    Held: While public schools may have a special interest in regulating
    some off-campus student speech, the special interests offered by the
    school are not sufficient to overcome B. L.’s interest in free expression
    in this case. Pp. 4–11.
    (a) In Tinker, we indicated that schools have a special interest in
    regulating on-campus student speech that “materially disrupts class-
    2               MAHANOY AREA SCHOOL DIST. v. B. L.
    Syllabus
    work or involves substantial disorder or invasion of the rights of oth-
    ers.” 
    393 U. S., at 513
    . The special characteristics that give schools
    additional license to regulate student speech do not always disappear
    when that speech takes place off campus. Circumstances that may
    implicate a school’s regulatory interests include serious or severe bul-
    lying or harassment targeting particular individuals; threats aimed at
    teachers or other students; the failure to follow rules concerning les-
    sons, the writing of papers, the use of computers, or participation in
    other online school activities; and breaches of school security devices.
    Pp. 4–6.
    (b) But three features of off-campus speech often, even if not always,
    distinguish schools’ efforts to regulate off-campus speech. First, a
    school will rarely stand in loco parentis when a student speaks off cam-
    pus. Second, from the student speaker’s perspective, regulations of off-
    campus speech, when coupled with regulations of on-campus speech,
    include all the speech a student utters during the full 24-hour day.
    That means courts must be more skeptical of a school’s efforts to regu-
    late off-campus speech, for doing so may mean the student cannot en-
    gage in that kind of speech at all. Third, the school itself has an inter-
    est in protecting a student’s unpopular expression, especially when the
    expression takes place off campus, because America’s public schools
    are the nurseries of democracy. Taken together, these three features
    of much off-campus speech mean that the leeway the First Amendment
    grants to schools in light of their special characteristics is diminished.
    Pp. 6–8.
    (c) The school violated B. L.’s First Amendment rights when it sus-
    pended her from the junior varsity cheerleading squad. Pp. 8–11.
    (1) B. L.’s posts are entitled to First Amendment protection. The
    statements made in B. L.’s Snapchats reflect criticism of the rules of a
    community of which B. L. forms a part. And B. L.’s message did not
    involve features that would place it outside the First Amendment’s or-
    dinary protection. Pp. 8–9.
    (2) The circumstances of B. L.’s speech diminish the school’s inter-
    est in regulation. B. L.’s posts appeared outside of school hours from
    a location outside the school. She did not identify the school in her
    posts or target any member of the school community with vulgar or
    abusive language. B. L. also transmitted her speech through a per-
    sonal cellphone, to an audience consisting of her private circle of Snap-
    chat friends. P. 9.
    (3) The school’s interest in teaching good manners and conse-
    quently in punishing the use of vulgar language aimed at part of the
    school community is weakened considerably by the fact that B. L.
    spoke outside the school on her own time. B. L. spoke under circum-
    Cite as: 594 U. S. ____ (2021)                      3
    Syllabus
    stances where the school did not stand in loco parentis. And the vul-
    garity in B. L.’s posts encompassed a message of criticism. In addition,
    the school has presented no evidence of any general effort to prevent
    students from using vulgarity outside the classroom. Pp. 9–10.
    (4) The school’s interest in preventing disruption is not supported
    by the record, which shows that discussion of the matter took, at most,
    5 to 10 minutes of an Algebra class “for just a couple of days” and that
    some members of the cheerleading team were “upset” about the con-
    tent of B. L.’s Snapchats. App. 82–83. This alone does not satisfy
    Tinker’s demanding standards. Pp. 10–11.
    (5) Likewise, there is little to suggest a substantial interference
    in, or disruption of, the school’s efforts to maintain cohesion on the
    school cheerleading squad. P. 11.
    
    964 F. 3d 170
    , affirmed.
    BREYER, J., delivered the opinion of the Court, in which ROBERTS, C. J.,
    and ALITO, SOTOMAYOR, KAGAN, GORSUCH, KAVANAUGH and BARRETT, JJ.,
    joined. ALITO, J., filed a concurring opinion, in which GORSUCH, J., joined.
    THOMAS, J., filed a dissenting opinion.
    Cite as: 594 U. S. ____ (2021)                                 1
    Opinion of the Court
    NOTICE: This opinion is subject to formal revision before publication in the
    preliminary print of the United States Reports. Readers are requested to
    notify the Reporter of Decisions, Supreme Court of the United States, Wash-
    ington, D. C. 20543, of any typographical or other formal errors, in order that
    corrections may be made before the preliminary print goes to press.
    SUPREME COURT OF THE UNITED STATES
    _________________
    No. 20–255
    _________________
    MAHANOY AREA SCHOOL DISTRICT, PETITIONER v.
    B. L., A MINOR, BY AND THROUGH HER FATHER,
    LAWRENCE LEVY AND HER MOTHER,
    BETTY LOU LEVY
    ON WRIT OF CERTIORARI TO THE UNITED STATES COURT OF
    APPEALS FOR THE THIRD CIRCUIT
    [June 23, 2021]
    JUSTICE BREYER delivered the opinion of the Court.
    A public high school student used, and transmitted to her
    Snapchat friends, vulgar language and gestures criticizing
    both the school and the school’s cheerleading team. The
    student’s speech took place outside of school hours and
    away from the school’s campus. In response, the school sus-
    pended the student for a year from the cheerleading team.
    We must decide whether the Court of Appeals for the Third
    Circuit correctly held that the school’s decision violated the
    First Amendment. Although we do not agree with the rea-
    soning of the Third Circuit panel’s majority, we do agree
    with its conclusion that the school’s disciplinary action vio-
    lated the First Amendment.
    I
    A
    B. L. (who, together with her parents, is a respondent in
    this case) was a student at Mahanoy Area High School, a
    public school in Mahanoy City, Pennsylvania. At the end of
    her freshman year, B. L. tried out for a position on the
    2           MAHANOY AREA SCHOOL DIST. v. B. L.
    Opinion of the Court
    school’s varsity cheerleading squad and for right fielder on
    a private softball team. She did not make the varsity cheer-
    leading team or get her preferred softball position, but she
    was offered a spot on the cheerleading squad’s junior var-
    sity team. B. L. did not accept the coach’s decision with
    good grace, particularly because the squad coaches had
    placed an entering freshman on the varsity team.
    That weekend, B. L. and a friend visited the Cocoa Hut,
    a local convenience store. There, B. L. used her smartphone
    to post two photos on Snapchat, a social media application
    that allows users to post photos and videos that disappear
    after a set period of time. B. L. posted the images to her
    Snapchat “story,” a feature of the application that allows
    any person in the user’s “friend” group (B. L. had about 250
    “friends”) to view the images for a 24 hour period.
    The first image B. L. posted showed B. L. and a friend
    with middle fingers raised; it bore the caption: “Fuck school
    fuck softball fuck cheer fuck everything.” App. 20. The sec-
    ond image was blank but for a caption, which read: “Love
    how me and [another student] get told we need a year of jv
    before we make varsity but tha[t] doesn’t matter to anyone
    else?” The caption also contained an upside-down smiley-
    face emoji. Id., at 21.
    B. L.’s Snapchat “friends” included other Mahanoy Area
    High School students, some of whom also belonged to the
    cheerleading squad. At least one of them, using a separate
    cellphone, took pictures of B. L.’s posts and shared them
    with other members of the cheerleading squad. One of the
    students who received these photos showed them to her
    mother (who was a cheerleading squad coach), and the im-
    ages spread. That week, several cheerleaders and other
    students approached the cheerleading coaches “visibly up-
    set” about B. L.’s posts. Id., at 83–84. Questions about the
    posts persisted during an Algebra class taught by one of the
    two coaches. Id., at 83.
    After discussing the matter with the school principal, the
    Cite as: 594 U. S. ____ (2021)             3
    Opinion of the Court
    coaches decided that because the posts used profanity in
    connection with a school extracurricular activity, they vio-
    lated team and school rules. As a result, the coaches sus-
    pended B. L. from the junior varsity cheerleading squad for
    the upcoming year. B. L.’s subsequent apologies did not
    move school officials. The school’s athletic director, princi-
    pal, superintendent, and school board, all affirmed B. L.’s
    suspension from the team. In response, B. L., together with
    her parents, filed this lawsuit in Federal District Court.
    B
    The District Court found in B. L.’s favor. It first granted
    a temporary restraining order and a preliminary injunction
    ordering the school to reinstate B. L. to the cheerleading
    team. In granting B. L.’s subsequent motion for summary
    judgment, the District Court found that B. L.’s Snapchats
    had not caused substantial disruption at the school. Cf.
    Tinker v. Des Moines Independent Community School Dist.,
    
    393 U. S. 503
     (1969). Consequently, the District Court de-
    clared that B. L.’s punishment violated the First Amend-
    ment, and it awarded B. L. nominal damages and attorneys’
    fees and ordered the school to expunge her disciplinary rec-
    ord.
    On appeal, a panel of the Third Circuit affirmed the Dis-
    trict Court’s conclusion. See 
    964 F. 3d 170
    , 194 (2020). In
    so doing, the majority noted that this Court had previously
    held in Tinker that a public high school could not constitu-
    tionally prohibit a peaceful student political demonstration
    consisting of “ ‘pure speech’ ” on school property during the
    school day. 
    393 U. S., at
    505–506, 514. In reaching its con-
    clusion in Tinker, this Court emphasized that there was no
    evidence the student protest would “substantially interfere
    with the work of the school or impinge upon the rights of
    other students.” 
    Id., at 509
    . But the Court also said that:
    “[C]onduct by [a] student, in class or out of it, which for any
    4           MAHANOY AREA SCHOOL DIST. v. B. L.
    Opinion of the Court
    reason—whether it stems from time, place, or type of be-
    havior—materially disrupts classwork or involves substan-
    tial disorder or invasion of the rights of others is . . . not
    immunized by the constitutional guarantee of freedom of
    speech.” 
    Id., at 513
    .
    Many courts have taken this statement as setting a
    standard—a standard that allows schools considerable free-
    dom on campus to discipline students for conduct that the
    First Amendment might otherwise protect. But here, the
    panel majority held that this additional freedom did “not
    apply to off-campus speech,” which it defined as “speech
    that is outside school-owned, -operated, or -supervised
    channels and that is not reasonably interpreted as bearing
    the school’s imprimatur.” 964 F. 3d, at 189. Because B. L.’s
    speech took place off campus, the panel concluded that the
    Tinker standard did not apply and the school consequently
    could not discipline B. L. for engaging in a form of pure
    speech.
    A concurring member of the panel agreed with the major-
    ity’s result but wrote that the school had not sufficiently
    justified disciplining B. L. because, whether the Tinker
    standard did or did not apply, B. L.’s speech was not sub-
    stantially disruptive.
    C
    The school district filed a petition for certiorari in this
    Court, asking us to decide “[w]hether [Tinker], which holds
    that public school officials may regulate speech that would
    materially and substantially disrupt the work and disci-
    pline of the school, applies to student speech that occurs off
    campus.” Pet. for Cert. I. We granted the petition.
    II
    We have made clear that students do not “shed their con-
    stitutional rights to freedom of speech or expression,” even
    “at the school house gate.” Tinker, 
    393 U. S., at 506
    ; see
    Cite as: 594 U. S. ____ (2021)             5
    Opinion of the Court
    also Brown v. Entertainment Merchants Assn., 
    564 U. S. 786
    , 794 (2011) (“[M]inors are entitled to a significant meas-
    ure of First Amendment protection” (alteration in original;
    internal quotation marks omitted)). But we have also made
    clear that courts must apply the First Amendment “in light
    of the special characteristics of the school environment.”
    Hazelwood School Dist. v. Kuhlmeier, 
    484 U. S. 260
    , 266
    (1988) (internal quotation mark omitted). One such char-
    acteristic, which we have stressed, is the fact that schools
    at times stand in loco parentis, i.e., in the place of parents.
    See Bethel School Dist. No. 403 v. Fraser, 
    478 U. S. 675
    , 684
    (1986).
    This Court has previously outlined three specific catego-
    ries of student speech that schools may regulate in certain
    circumstances: (1) “indecent,” “lewd,” or “vulgar” speech ut-
    tered during a school assembly on school grounds, see 
    id., at 685
    ; (2) speech, uttered during a class trip, that promotes
    “illegal drug use,” see Morse v. Frederick, 
    551 U. S. 393
    , 409
    (2007); and (3) speech that others may reasonably perceive
    as “bear[ing] the imprimatur of the school,” such as that ap-
    pearing in a school-sponsored newspaper, see Kuhlmeier,
    
    484 U. S., at 271
    .
    Finally, in Tinker, we said schools have a special interest
    in regulating speech that “materially disrupts classwork or
    involves substantial disorder or invasion of the rights of
    others.” 
    393 U. S., at 513
    . These special characteristics call
    for special leeway when schools regulate speech that occurs
    under its supervision.
    Unlike the Third Circuit, we do not believe the special
    characteristics that give schools additional license to regu-
    late student speech always disappear when a school regu-
    lates speech that takes place off campus. The school’s reg-
    ulatory interests remain significant in some off-campus
    circumstances. The parties’ briefs, and those of amici, list
    several types of off-campus behavior that may call for school
    6           MAHANOY AREA SCHOOL DIST. v. B. L.
    Opinion of the Court
    regulation. These include serious or severe bullying or har-
    assment targeting particular individuals; threats aimed at
    teachers or other students; the failure to follow rules con-
    cerning lessons, the writing of papers, the use of computers,
    or participation in other online school activities; and
    breaches of school security devices, including material
    maintained within school computers.
    Even B. L. herself and the amici supporting her would
    redefine the Third Circuit’s off-campus/on-campus distinc-
    tion, treating as on campus: all times when the school is
    responsible for the student; the school’s immediate sur-
    roundings; travel en route to and from the school; all speech
    taking place over school laptops or on a school’s website;
    speech taking place during remote learning; activities
    taken for school credit; and communications to school e-
    mail accounts or phones. Brief for Respondents 36–37. And
    it may be that speech related to extracurricular activities,
    such as team sports, would also receive special treatment
    under B. L.’s proposed rule. See Tr. of Oral Arg. 71, 85.
    We are uncertain as to the length or content of any such
    list of appropriate exceptions or carveouts to the Third Cir-
    cuit majority’s rule. That rule, basically, if not entirely,
    would deny the off-campus applicability of Tinker’s highly
    general statement about the nature of a school’s special in-
    terests. Particularly given the advent of computer-based
    learning, we hesitate to determine precisely which of many
    school-related off-campus activities belong on such a list.
    Neither do we now know how such a list might vary, de-
    pending upon a student’s age, the nature of the school’s off-
    campus activity, or the impact upon the school itself. Thus,
    we do not now set forth a broad, highly general First
    Amendment rule stating just what counts as “off campus”
    speech and whether or how ordinary First Amendment
    standards must give way off campus to a school’s special
    need to prevent, e.g., substantial disruption of learning-re-
    lated activities or the protection of those who make up a
    Cite as: 594 U. S. ____ (2021)              7
    Opinion of the Court
    school community.
    We can, however, mention three features of off-campus
    speech that often, even if not always, distinguish schools’
    efforts to regulate that speech from their efforts to regulate
    on-campus speech. Those features diminish the strength of
    the unique educational characteristics that might call for
    special First Amendment leeway.
    First, a school, in relation to off-campus speech, will
    rarely stand in loco parentis. The doctrine of in loco paren-
    tis treats school administrators as standing in the place of
    students’ parents under circumstances where the children’s
    actual parents cannot protect, guide, and discipline them.
    Geographically speaking, off-campus speech will normally
    fall within the zone of parental, rather than school-related,
    responsibility.
    Second, from the student speaker’s perspective, regula-
    tions of off-campus speech, when coupled with regulations
    of on-campus speech, include all the speech a student utters
    during the full 24-hour day. That means courts must be
    more skeptical of a school’s efforts to regulate off-campus
    speech, for doing so may mean the student cannot engage
    in that kind of speech at all. When it comes to political or
    religious speech that occurs outside school or a school pro-
    gram or activity, the school will have a heavy burden to jus-
    tify intervention.
    Third, the school itself has an interest in protecting a stu-
    dent’s unpopular expression, especially when the expres-
    sion takes place off campus. America’s public schools are
    the nurseries of democracy. Our representative democracy
    only works if we protect the “marketplace of ideas.” This
    free exchange facilitates an informed public opinion, which,
    when transmitted to lawmakers, helps produce laws that
    reflect the People’s will. That protection must include the
    protection of unpopular ideas, for popular ideas have less
    need for protection. Thus, schools have a strong interest in
    ensuring that future generations understand the workings
    8           MAHANOY AREA SCHOOL DIST. v. B. L.
    Opinion of the Court
    in practice of the well-known aphorism, “I disapprove of
    what you say, but I will defend to the death your right to
    say it.” (Although this quote is often attributed to Voltaire,
    it was likely coined by an English writer, Evelyn Beatrice
    Hall.)
    Given the many different kinds of off-campus speech, the
    different potential school-related and circumstance-specific
    justifications, and the differing extent to which those justi-
    fications may call for First Amendment leeway, we can, as
    a general matter, say little more than this: Taken together,
    these three features of much off-campus speech mean that
    the leeway the First Amendment grants to schools in light
    of their special characteristics is diminished. We leave for
    future cases to decide where, when, and how these features
    mean the speaker’s off-campus location will make the criti-
    cal difference. This case can, however, provide one exam-
    ple.
    III
    Consider B. L.’s speech. Putting aside the vulgar lan-
    guage, the listener would hear criticism, of the team, the
    team’s coaches, and the school—in a word or two, criticism
    of the rules of a community of which B. L. forms a part. This
    criticism did not involve features that would place it outside
    the First Amendment’s ordinary protection. B. L.’s posts,
    while crude, did not amount to fighting words. See Chap-
    linsky v. New Hampshire, 
    315 U. S. 568
     (1942). And while
    B. L. used vulgarity, her speech was not obscene as this
    Court has understood that term. See Cohen v. California,
    
    403 U. S. 15
    , 19–20 (1971). To the contrary, B. L. uttered
    the kind of pure speech to which, were she an adult, the
    First Amendment would provide strong protection. See 
    id., at 24
    ; cf. Snyder v. Phelps, 
    562 U. S. 443
    , 461 (2011) (First
    Amendment protects “even hurtful speech on public issues
    to ensure that we do not stifle public debate”); Rankin v.
    Cite as: 594 U. S. ____ (2021)              9
    Opinion of the Court
    McPherson, 
    483 U. S. 378
    , 387 (1987) (“The inappropri-
    ate . . . character of a statement is irrelevant to the question
    whether it deals with a matter of public concern”).
    Consider too when, where, and how B. L. spoke. Her
    posts appeared outside of school hours from a location out-
    side the school. She did not identify the school in her posts
    or target any member of the school community with vulgar
    or abusive language. B. L. also transmitted her speech
    through a personal cellphone, to an audience consisting of
    her private circle of Snapchat friends. These features of her
    speech, while risking transmission to the school itself, none-
    theless (for reasons we have just explained, supra, at 7–8)
    diminish the school’s interest in punishing B. L.’s utter-
    ance.
    But what about the school’s interest, here primarily an
    interest in prohibiting students from using vulgar language
    to criticize a school team or its coaches—at least when that
    criticism might well be transmitted to other students, team
    members, coaches, and faculty? We can break that general
    interest into three parts.
    First, we consider the school’s interest in teaching good
    manners and consequently in punishing the use of vulgar
    language aimed at part of the school community. See App.
    35 (indicating that coaches removed B. L. from the cheer
    team because “there was profanity in [her] Snap and it was
    directed towards cheerleading”); see also id., at 27, 47, and
    n. 9, 78, 82. The strength of this anti-vulgarity interest is
    weakened considerably by the fact that B. L. spoke outside
    the school on her own time. See Morse, 
    551 U. S., at 405
    (clarifying that although a school can regulate a student’s
    use of sexual innuendo in a speech given within the school,
    if the student “delivered the same speech in a public forum
    outside the school context, it would have been protected”);
    see also Fraser, 
    478 U. S., at 688
     (Brennan, J., concurring
    in judgment) (noting that if the student in Fraser “had
    given the same speech outside of the school environment,
    10          MAHANOY AREA SCHOOL DIST. v. B. L.
    Opinion of the Court
    he could not have been penalized simply because govern-
    ment officials considered his language to be inappropri-
    ate”).
    B. L. spoke under circumstances where the school did not
    stand in loco parentis. And there is no reason to believe
    B. L.’s parents had delegated to school officials their own
    control of B. L.’s behavior at the Cocoa Hut. Moreover, the
    vulgarity in B. L.’s posts encompassed a message, an ex-
    pression of B. L.’s irritation with, and criticism of, the
    school and cheerleading communities. Further, the school
    has presented no evidence of any general effort to prevent
    students from using vulgarity outside the classroom. To-
    gether, these facts convince us that the school’s interest in
    teaching good manners is not sufficient, in this case, to
    overcome B. L.’s interest in free expression.
    Second, the school argues that it was trying to prevent
    disruption, if not within the classroom, then within the
    bounds of a school-sponsored extracurricular activity. But
    we can find no evidence in the record of the sort of “substan-
    tial disruption” of a school activity or a threatened harm to
    the rights of others that might justify the school’s action.
    Tinker, 
    393 U. S., at 514
    . Rather, the record shows that
    discussion of the matter took, at most, 5 to 10 minutes of an
    Algebra class “for just a couple of days” and that some mem-
    bers of the cheerleading team were “upset” about the con-
    tent of B. L.’s Snapchats. App. 82–83. But when one of
    B. L.’s coaches was asked directly if she had “any reason to
    think that this particular incident would disrupt class or
    school activities other than the fact that kids kept ask-
    ing . . . about it,” she responded simply, “No.” Id., at 84. As
    we said in Tinker, “for the State in the person of school offi-
    cials to justify prohibition of a particular expression of opin-
    ion, it must be able to show that its action was caused by
    something more than a mere desire to avoid the discomfort
    and unpleasantness that always accompany an unpopular
    viewpoint.” 
    393 U. S., at 509
    . The alleged disturbance here
    Cite as: 594 U. S. ____ (2021)            11
    Opinion of the Court
    does not meet Tinker’s demanding standard.
    Third, the school presented some evidence that expresses
    (at least indirectly) a concern for team morale. One of the
    coaches testified that the school decided to suspend B. L.,
    not because of any specific negative impact upon a particu-
    lar member of the school community, but “based on the fact
    that there was negativity put out there that could impact
    students in the school.” App. 81. There is little else, how-
    ever, that suggests any serious decline in team morale—to
    the point where it could create a substantial interference
    in, or disruption of, the school’s efforts to maintain team co-
    hesion. As we have previously said, simple “undifferenti-
    ated fear or apprehension . . . is not enough to overcome the
    right to freedom of expression.” Tinker, 
    393 U. S., at 508
    .
    It might be tempting to dismiss B. L.’s words as unworthy
    of the robust First Amendment protections discussed
    herein. But sometimes it is necessary to protect the super-
    fluous in order to preserve the necessary. See Tyson &
    Brother v. Banton, 
    273 U. S. 418
    , 447 (1927) (Holmes, J.,
    dissenting). “We cannot lose sight of the fact that, in what
    otherwise might seem a trifling and annoying instance of
    individual distasteful abuse of a privilege, these fundamen-
    tal societal values are truly implicated.” Cohen, 
    403 U. S., at 25
    .
    *      *    *
    Although we do not agree with the reasoning of the Third
    Circuit’s panel majority, for the reasons expressed above,
    resembling those of the panel’s concurring opinion, we
    nonetheless agree that the school violated B. L.’s First
    Amendment rights. The judgment of the Third Circuit is
    therefore affirmed.
    It is so ordered.
    Cite as: 594 U. S. ____ (2021)                     1
    ALITO, J., concurring
    SUPREME COURT OF THE UNITED STATES
    _________________
    No. 20–255
    _________________
    MAHANOY AREA SCHOOL DISTRICT, PETITIONER v.
    B. L., A MINOR, BY AND THROUGH HER FATHER,
    LAWRENCE LEVY AND HER MOTHER,
    BETTY LOU LEVY
    ON WRIT OF CERTIORARI TO THE UNITED STATES COURT OF
    APPEALS FOR THE THIRD CIRCUIT
    [June 23, 2021]
    JUSTICE ALITO, with whom JUSTICE GORSUCH joins, con-
    curring.
    I join the opinion of the Court but write separately to
    explain my understanding of the Court’s decision and
    the framework within which I think cases like this
    should be analyzed. This is the first case in which we
    have considered the constitutionality of a public school’s
    attempt to regulate true off-premises student speech,1
    ——————
    1 In Tinker v. Des Moines Independent Community School Dist., 
    393 U. S. 503
     (1969), not only did the speech occur on school grounds during
    the regular school day, but our opinion was specifically directed at on-
    premises speech. See 
    id., at 506
     (“It can hardly be argued that either
    students or teachers shed their constitutional rights to freedom of speech
    or expression at the schoolhouse gate” (emphasis added)); 
    ibid.
     (“First
    Amendment rights, applied in light of the special characteristics of the
    school environment, are available to teachers and students” (emphasis
    added)); 
    id., at 507
     (“[T]he Court has repeatedly emphasized the need for
    affirming the comprehensive authority of the States and of school offi-
    cials, consistent with fundamental constitutional safeguards, to prescribe
    and control conduct in the schools” (emphasis added)); 
    id.,
     at 512–513
    (referring to speech that occurs “in the classroom,” “in the cafeteria, or
    on the playing field, or on the campus during the authorized hours”).
    Tinker makes no reference whatsoever to speech that takes place off
    premises and outside “authorized hours.”
    2              MAHANOY AREA SCHOOL DIST. v. B. L.
    ALITO, J., concurring
    and therefore it is important that our opinion not be misun-
    derstood.2
    I
    The Court holds—and I agree—that: the First Amend-
    ment permits public schools to regulate some student
    speech that does not occur on school premises during the
    regular school day;3 this authority is more limited than the
    authority that schools exercise with respect to on-premises
    speech;4 courts should be “skeptical” about the constitution-
    ality of the regulation of off-premises speech;5 the doctrine
    of in loco parentis “rarely” applies to off-premises speech;6
    public school students, like all other Americans, have the
    right to express “unpopular” ideas on public issues, even
    when those ideas are expressed in language that some find
    ——————
    All our other cases involving the free-speech rights of public school stu-
    dents concerned speech in school or in a school-sponsored event or publi-
    cation. See Bethel School Dist. No. 403 v. Fraser, 
    478 U. S. 675
    , 677–678
    (1986) (school assembly); Hazelwood School Dist. v. Kuhlmeier, 
    484 U. S. 260
    , 262 (1988) (school newspaper); Morse v. Frederick, 
    551 U. S. 393
    ,
    397 (2007) (display of banner on street near school at school-sponsored
    event).
    2 This case does not involve speech by a student at a public college or
    university. For several reasons, including the age, independence, and
    living arrangements of such students, regulation of their speech may
    raise very different questions from those presented here. I do not under-
    stand the decision in this case to apply to such students.
    3 See ante, at 5 (stating that a public school’s authority to regulate stu-
    dent speech does not “always disappear” when the speech “takes place
    off campus” (emphasis added)); 
    ibid.
     (“The school’s regulatory interests
    remain significant in some off-campus circumstances” (emphasis
    added)).
    4 See ante, at 8 (stating that schools have “diminished” authority to
    regulate off-premises speech).
    5 See ante, at 7 (“[C]ourts must be more skeptical of a school’s efforts to
    regulate off-campus speech”).
    6 See 
    ibid.
     (“[A] school, in relation to off-campus speech, will rarely
    stand in loco parentis”).
    Cite as: 594 U. S. ____ (2021)             3
    ALITO, J., concurring
    “ ‘ inappropriate ’ ” or “ ‘ hurtful ’ ”;7 public schools have the
    duty to teach students that freedom of speech, including un-
    popular speech, is essential to our form of self-government;8
    the Mahanoy Area High School violated B. L.’s First
    Amendment rights when it punished her for the messages
    she posted on her own time while away from school prem-
    ises; and the judgment of the Third Circuit must therefore
    be affirmed.
    I also agree that it is not prudent for us to attempt at this
    time to “set forth a broad, highly general First Amendment
    rule” governing all off-premises speech. Ante, at 6. But in
    order to understand what the Court has held, it is helpful
    to consider the framework within which efforts to regulate
    off-premises speech should be analyzed.
    II
    I start with this threshold question: Why does the First
    Amendment ever allow the free-speech rights of public
    school students to be restricted to a greater extent than the
    rights of other juveniles who do not attend a public school?
    As the Court recognized in Tinker v. Des Moines Independ-
    ent Community School Dist., 
    393 U. S. 503
    , 509 (1969),
    when a public school regulates student speech, it acts as an
    arm of the State in which it is located. Suppose that B. L.
    had been enrolled in a private school and did exactly what
    she did in this case—send out vulgar and derogatory mes-
    sages that focused on her school’s cheerleading squad. The
    Commonwealth of Pennsylvania would have had no legal
    basis to punish her and almost certainly would not have
    even tried. So why should her status as a public school stu-
    dent give the Commonwealth any greater authority to pun-
    ish her speech?
    Our cases involving the regulation of student speech have
    ——————
    7 Ante, at 7, 8–9.
    8 Ante, at 7–8.
    4           MAHANOY AREA SCHOOL DIST. v. B. L.
    ALITO, J., concurring
    not directly addressed this question. All those cases in-
    volved either in-school speech or speech that was tanta-
    mount to in-school speech. See n. 1, supra. And in those
    cases, the Court appeared to take it for granted that “the
    special characteristics of the school environment” justified
    special rules. Morse v. Frederick, 
    551 U. S. 393
    , 397, 403,
    405, 406, n. 2, 408 (2007) (internal quotation marks omit-
    ted); Hazelwood School Dist. v. Kuhlmeier, 
    484 U. S. 260
    ,
    266 (1988) (internal quotation marks omitted); Tinker, 
    393 U. S., at 506
    .
    Why the Court took this for granted is not hard to imag-
    ine. As a practical matter, it is impossible to see how a
    school could function if administrators and teachers could
    not regulate on-premises student speech, including by im-
    posing content-based restrictions in the classroom. In a
    math class, for example, the teacher can insist that stu-
    dents talk about math, not some other subject. See
    Kuhlmeier, 
    484 U. S., at 279
     (Brennan, J., dissenting) (“The
    young polemic who stands on a soapbox during calculus
    class to deliver an eloquent political diatribe interferes with
    the legitimate teaching of calculus”). In addition, when a
    teacher asks a question, the teacher must have the author-
    ity to insist that the student respond to that question and
    not some other question, and a teacher must also have the
    authority to speak without interruption and to demand that
    students refrain from interrupting one another. Practical
    necessity likewise dictates that teachers and school admin-
    istrators have related authority with respect to other in-
    school activities like auditorium programs attended by a
    large audience. See Bethel School Dist. No. 403 v. Fraser,
    
    478 U. S. 675
    , 685 (1986) (“A high school assembly . . . is no
    place for a sexually explicit monologue directed towards an
    unsuspecting audience of teenage students”); 
    id., at 689
    (Brennan, J., concurring in judgment) (“In the present case,
    school officials sought only to ensure that a high school as-
    sembly proceed in an orderly manner”); see also Kuhlmeier,
    Cite as: 594 U. S. ____ (2021)            5
    ALITO, J., concurring
    
    484 U. S., at 279
     (Brennan, J., dissenting) (“[T]he student
    who delivers a lewd endorsement of a student-government
    candidate might so extremely distract an impressionable
    high school audience as to interfere with the orderly opera-
    tion of the school”).
    Because no school could operate effectively if teachers
    and administrators lacked the authority to regulate in-
    school speech in these ways, the Court may have felt no
    need to specify the source of this authority or to explain how
    the special rules applicable to in-school student speech fit
    into our broader framework of free-speech case law. But
    when a public school regulates what students say or write
    when they are not on school grounds and are not participat-
    ing in a school program, the school has the obligation to an-
    swer the question with which I began: Why should enroll-
    ment in a public school result in the diminution of a
    student’s free-speech rights?
    The only plausible answer that comes readily to mind is
    consent, either express or implied. The theory must be that
    by enrolling a child in a public school, parents consent on
    behalf of the child to the relinquishment of some of the
    child’s free-speech rights.
    This understanding is consistent with the conditions to
    which an adult would implicitly consent by enrolling in an
    adult education class run by a unit of state or local govern-
    ment. If an adult signs up for, say, a French class, the adult
    may be required to speak French, to answer the teacher’s
    questions, and to comply with other rules that are imposed
    for the sake of orderly instruction.
    When it comes to children, courts in this country have
    analyzed the issue of consent by adapting the common-law
    doctrine of in loco parentis. See Morse, 
    551 U. S., at
    413–
    416 (THOMAS, J., concurring). Under the common law, as
    Blackstone explained, “[a father could] delegate part of his
    parental authority . . . to the tutor or schoolmaster of his
    child; who is then in loco parentis, and has such a portion
    6             MAHANOY AREA SCHOOL DIST. v. B. L.
    ALITO, J., concurring
    of the power of the parent committed to his charge, [namely,]
    that of restraint and correction, as may be necessary to an-
    swer the purposes for which he is employed.” 1 W. Black-
    stone, Commentaries on the Laws of England 441 (1765)
    (some emphasis added).
    Blackstone’s explanation of the doctrine seems to treat it
    primarily as an implied term in a private employment
    agreement between a father and those with whom he con-
    tracted for the provision of educational services for his
    child,9 and therefore the scope of the delegation that could
    be inferred depended on “the purposes for which [the tutor
    or schoolmaster was] employed.” 
    Ibid.
     If a child was sent
    to a boarding school, the parents would not have been in a
    position to monitor or control the child’s behavior or to at-
    tend to the child’s welfare on a daily basis, and the school-
    master would be regarded as having implicitly received the
    authority to perform those functions around the clock while
    the child was in residence. On the other hand, if parents
    hired a tutor to instruct a child in the home on certain sub-
    jects during certain hours, the scope of the delegation would
    be different. The tutor would be in charge during lessons,
    but the parents would retain most of their authority. In
    short, the scope of the delegation depended on the scope of
    the agreed-upon undertaking.
    Today, of course, the educational picture is quite differ-
    ent. The education of children within a specified age range
    is compulsory,10 and States specify the minimum number of
    ——————
    9 In a sensational and highly publicized mid-19th century case, there
    was an express delegation, Regina v. Hopley, 2 F. & F. 202, 175 Eng. Rep.
    1024 (N. P. 1860), but in other 19th century cases, the delegation was
    inferred. See Fitzgerald v. Northcote, 4 F. & F. 656, 176 Eng. Rep. 734
    (N. P. 1865); State v. Osborne, 
    24 Mo. App. 309
     (1887).
    10 See Ingraham v. Wright, 
    430 U. S. 651
    , 660, n. 14 (1977) (noting that
    “compulsory school attendance laws were in force in all the States” by
    1918).
    Cite as: 594 U. S. ____ (2021)                      7
    ALITO, J., concurring
    hours per day and the minimum number of days per year
    that a student must attend classes, as well as many aspects
    of the school curriculum.11 Parents are not required to en-
    roll their children in a public school. They can select a pri-
    vate school if a suitable one is available and they can afford
    the tuition, and they may also be able to educate their chil-
    dren at home if they have the time and ability and can meet
    the standards that their State imposes.12 But by choice or
    necessity, nearly 90% of the students in this country attend
    public schools,13 and parents and public schools do not enter
    into a contractual relationship.
    If in loco parentis is transplanted from Blackstone’s Eng-
    land to the 21st century United States, what it amounts to
    is simply a doctrine of inferred parental consent to a public
    ——————
    11 See National Center for Education Statistics (NCES), State Educa-
    tion Practices, Table 5.14: Number of Instructional Days and Hours in
    the School Year, by State, 2018, https://nces.ed.gov/programs/
    statereform/tab5_14.asp.
    12 Pennsylvania, for example, requires a minimum of 180 days of in-
    struction per year. See Pa. Stat. Ann., Tit. 24, §13–1327.1(c) (Purdon
    2016). Students must be taught English, mathematics, science, geogra-
    phy, history, civics, safety education, health, physical education, music,
    and art. §§13–1327.1(c)(1)–(2). Parents are required to maintain current
    and detailed records of their child’s learning materials and progress,
    §13–1327.1(e)(1), and they must turn those records over to a teacher or
    psychologist for an annual evaluation to determine whether “an appro-
    priate education is occurring,” §13–1327.1(e)(2). The evaluation also in-
    cludes an interview of the child. Ibid. Once the evaluation is completed,
    it is submitted to the superintendent of the public school district of resi-
    dence. §§13–1327.1(e)(2), (h)(1). If the superintendent and a hearing
    examiner find that the child is not being supplied an appropriate educa-
    tion, and the parents’ appeal of that decision is unsuccessful, the child
    will be promptly enrolled in the public school district of residence or a
    private school. §§13–1327.1(k)–(l).
    13 See NCES, School Choice in the United States, 2019, Table 206.20:
    Percentage Distribution of Students Ages 5 through 17 Attending Kin-
    dergarten through 12th Grade, By School Type or Participation in Home-
    schooling and Selected Child, Parent, and Household Characteristics, Se-
    lected Years 1999 Through 2016, https://nces.ed.gov/programs/
    digest//d19/tables/dt19_206.20.asp.
    8           MAHANOY AREA SCHOOL DIST. v. B. L.
    ALITO, J., concurring
    school’s exercise of a degree of authority that is commensu-
    rate with the task that the parents ask the school to per-
    form. Because public school students attend school for only
    part of the day and continue to live at home, the degree of
    authority conferred is obviously less than that delegated to
    the head of a late-18th century boarding school, but because
    public school students are taught outside the home, the au-
    thority conferred may be greater in at least some respects
    than that enjoyed by a tutor of Blackstone’s time.
    So how much authority to regulate speech do parents im-
    plicitly delegate when they enroll a child at a public school?
    The answer must be that parents are treated as having re-
    linquished the measure of authority that the schools must
    be able to exercise in order to carry out their state-
    mandated educational mission, as well as the authority to
    perform any other functions to which parents expressly or
    implicitly agree—for example, by giving permission for a
    child to participate in an extracurricular activity or to go on
    a school trip.
    III
    I have already explained what this delegated authority
    means with respect to student speech during standard
    classroom instruction. And it is reasonable to infer that
    this authority extends to periods when students are in
    school but are not in class, for example, when they are walk-
    ing in a hall, eating lunch, congregating outside before the
    school day starts, or waiting for a bus after school. During
    the entire school day, a school must have the authority to
    protect everyone on its premises, and therefore schools
    must be able to prohibit threatening and harassing speech.
    An effective instructional atmosphere could not be main-
    tained in a school, and good teachers would be hard to re-
    cruit and retain, if students were free to abuse or disrespect
    them. And the school has a duty to protect students while
    in school because their parents are unable to do that during
    Cite as: 594 U. S. ____ (2021)             9
    ALITO, J., concurring
    those hours. See Morse, 
    551 U. S., at 424
     (ALITO, J., con-
    curring). But even when students are on school premises
    during regular school hours, they are not stripped of their
    free-speech rights. Tinker teaches that expression that
    does not interfere with a class (such as by straying from the
    topic, interrupting the teacher or other students, etc.) can-
    not be suppressed unless it “involves substantial disorder
    or invasion of the rights of others.” 
    393 U. S., at 513
    .
    IV
    A
    A public school’s regulation of off-premises student
    speech is a different matter. While the decision to enroll a
    student in a public school may be regarded as conferring
    the authority to regulate some off-premises speech (a sub-
    ject I address below), enrollment cannot be treated as a
    complete transfer of parental authority over a student’s
    speech. In our society, parents, not the State, have the pri-
    mary authority and duty to raise, educate, and form the
    character of their children. See Wisconsin v. Yoder, 
    406 U. S. 205
    , 232 (1972) (“The history and culture of Western
    civilization reflect a strong tradition of parental concern for
    the nurture and upbringing of their children. This primary
    role of the parents in the upbringing of their children is now
    established beyond debate as an enduring American tradi-
    tion”); Pierce v. Society of Sisters, 
    268 U. S. 510
    , 534–535
    (1925) (discussing “the liberty of parents and guardians to
    direct the upbringing and education of children under their
    control”). Parents do not implicitly relinquish all that au-
    thority when they send their children to a public school. As
    the Court notes, it would be far-fetched to suggest that en-
    rollment implicitly confers the right to regulate what a child
    10            MAHANOY AREA SCHOOL DIST. v. B. L.
    ALITO, J., concurring
    says or writes at all times of day and throughout the calen-
    dar year. See ante, at 7.14 Any such argument would run
    headlong into the fundamental principle that a State “may
    not deny a benefit to a person on a basis that infringes his
    constitutionally protected . . . freedom of speech even if he
    has no entitlement to that benefit.”15 Agency for Int’l Devel-
    opment v. Alliance for Open Society Int’l, Inc., 
    570 U. S. 205
    ,
    214 (2013) (internal quotation marks omitted). While the
    in-school restrictions discussed above are essential to the
    operation of a public school system, any argument in favor
    of expansive regulation of off-premises speech must contend
    with this fundamental free-speech principle.
    ——————
    14 There is no basis for concluding that the original public meaning of
    the free-speech right protected by the First and Fourteenth Amendments
    was understood by Congress or the legislatures that ratified those
    Amendments as permitting a public school to punish a wide swath of off-
    premises student speech. Compare post, at 2–4 (THOMAS, J., dissenting).
    At the time of the adoption of the First Amendment, public education
    was virtually unknown, and the Amendment did not apply to the States.
    And as for the Fourteenth Amendment, research has found only one pre-
    1868 case involving a public school’s regulation of a student’s off-prem-
    ises speech. In Lander v. Seaver, 
    32 Vt. 114
     (1859), an 11-year-old boy,
    while driving his father’s cow by the home of his teacher, called the
    teacher “Old Jack Seaver” in the presence of other students. Id., at 115
    (emphasis deleted). The next day, the teacher “whipped him with a small
    rawhide.” Ibid. In a tort suit against the teacher for assault and battery,
    the Supreme Court of Vermont reversed the lower court’s judgment for
    the teacher but opined that the teacher had the authority to punish the
    student’s speech because of its effect on the operation of the school. Id.,
    at 120–121, 125. This decision is of negligible value for present purposes.
    It does not appear that any claim was raised under the state constitu-
    tional provision protecting freedom of speech. And even if flinty Vermont
    parents at the time in question could be understood to have implicitly
    delegated to the teacher the authority to whip their son for his off-prem-
    ises speech, the same inference is wholly unrealistic today.
    15 Here, the Pennsylvania Constitution required that B. L. and all
    other students be offered “a thorough and efficient system of public edu-
    cation.” Art. III, §14.
    Cite as: 594 U. S. ____ (2021)           11
    ALITO, J., concurring
    B
    The degree to which enrollment in a public school can be
    regarded as a delegation of authority over off-campus
    speech depends on the nature of the speech and the circum-
    stances under which it occurs. I will not attempt to provide
    a complete taxonomy of off-premises speech, but relevant
    lower court cases tend to fall into a few basic groups. And
    with respect to speech in each of these groups, the question
    that courts must ask is whether parents who enroll their
    children in a public school can reasonably be understood to
    have delegated to the school the authority to regulate the
    speech in question.
    One category of off-premises student speech falls easily
    within the scope of the authority that parents implicitly or
    explicitly provide. This category includes speech that takes
    place during or as part of what amounts to a temporal or
    spatial extension of the regular school program, e.g., online
    instruction at home, assigned essays or other homework,
    and transportation to and from school. Also included are
    statements made during other school activities in which
    students participate with their parents’ consent, such as
    school trips, school sports and other extracurricular activi-
    ties that may take place after regular school hours or off
    school premises, and after-school programs for students
    who would otherwise be without adult supervision during
    that time. Abusive speech that occurs while students are
    walking to and from school may also fall into this category
    on the theory that it is school attendance that puts students
    on that route and in the company of the fellow students who
    engage in the abuse. The imperatives that justify the reg-
    ulation of student speech while in school—the need for or-
    derly and effective instruction and student protection—ap-
    ply more or less equally to these off-premises activities.
    Most of the specific examples of off-premises speech that
    the Court mentions fall into this category. See ante, at 6
    12            MAHANOY AREA SCHOOL DIST. v. B. L.
    ALITO, J., concurring
    (speech taking place during “remote learning,” “participa-
    tion in other online school activities,” “activities taken for
    school credit,” “travel en route to and from the school,” “[the
    time during which] the school is responsible for the stu-
    dent,” and “extracurricular activities,” as well as speech
    taking place on “the school’s immediate surroundings” or in
    the context of “writing . . . papers”).16 The Court’s broad
    statements about off-premises speech must be understood
    with this in mind.
    At the other end of the spectrum, there is a category of
    speech that is almost always beyond the regulatory author-
    ity of a public school. This is student speech that is not ex-
    pressly and specifically directed at the school, school admin-
    istrators, teachers, or fellow students and that addresses
    matters of public concern, including sensitive subjects like
    politics, religion, and social relations. Speech on such mat-
    ters lies at the heart of the First Amendment’s protection,
    ——————
    16 Two other examples mentioned by the Court—“communications to
    school e-mail accounts or phones” and speech “on a school’s website”—
    may fall into the same category if they concern school work. Ante, at 6.
    The Court also mentions “breaches of school security devices,” ibid., but
    such breaches may be punishable regardless of whether the perpetrator
    is a student at the school. See, e.g., 18 Pa. Const. Stat. §7611 (2016)
    (“Unlawful use of computer and other computer crimes”). Another spe-
    cific example provided by the Court is “all speech taking place over school
    laptops.” Ante, at 6. I do not take this statement to apply under all cir-
    cumstances to all student speech on such laptops. In a well-publicized
    case, a public high school that provided laptops to high school students
    used those computers to surreptitiously monitor students’ private mes-
    sages and to photograph them in their homes. See Robbins v. Lower
    Merion School Dist., 
    2010 WL 3421026
    , *1 (ED Pa., Aug. 30, 2010); see
    also Defendants’ Memorandum of Law in Opposition to Plaintiffs’ Motion
    for Class Certification and in Support of Defendants’ Cross-Motion for
    Entry of Permanent Equitable Relief in Robbins v. Lower Merion School
    Dist., No. 2:10–cv–00665 (ED Pa.), pp. 4–5. I do not understand the
    Court to approve such a practice. In assessing the degree to which a
    school can regulate speech on a laptop that a school provides for student
    use outside school, it would be important to know the terms of the agree-
    ment under which the laptop was provided.
    Cite as: 594 U. S. ____ (2021)           13
    ALITO, J., concurring
    see Lane v. Franks, 
    573 U. S. 228
    , 235 (2014) (“Speech by
    citizens on matters of public concern lies at the heart of the
    First Amendment”); Schenck v. Pro-Choice Network of
    Western N. Y., 
    519 U. S. 357
    , 377 (1997) (“Leafletting and
    commenting on matters of public concern are classic forms
    of speech that lie at the heart of the First Amendment”);
    Capital Square Review and Advisory Bd. v. Pinette, 
    515 U. S. 753
    , 760 (1995) (“[A] free-speech clause without reli-
    gion would be Hamlet without the prince”); McIntyre v.
    Ohio Elections Comm’n, 
    514 U. S. 334
    , 347 (1995) (“[A]dvo-
    cacy of a politically controversial viewpoint . . . is the es-
    sence of First Amendment expression”); Hustler Magazine,
    Inc. v. Falwell, 
    485 U. S. 46
    , 50 (1988) (“At the heart of the
    First Amendment is the recognition of the fundamental im-
    portance of the free flow of ideas and opinions on matters of
    public interest and concern”); Connick v. Myers, 
    461 U. S. 138
    , 145 (1983) (“[S]peech on public issues occupies the
    highest rung of the hierarchy of First Amendment values,
    and is entitled to special protection” (internal quotation
    marks omitted)), and the connection between student
    speech in this category and the ability of a public school to
    carry out its instructional program is tenuous.
    If a school tried to regulate such speech, the most that it
    could claim is that offensive off-premises speech on im-
    portant matters may cause controversy and recriminations
    among students and may thus disrupt instruction and good
    order on school premises. But it is a “bedrock principle”
    that speech may not be suppressed simply because it ex-
    presses ideas that are “offensive or disagreeable.” Texas v.
    Johnson, 
    491 U. S. 397
    , 414 (1989); see also Matal v. Tam,
    582 U. S. ___, ___–___ (2017) (slip op., at 1–2) (“Speech may
    not be banned on the ground that it expresses ideas that
    offend”); FCC v. Pacifica Foundation, 
    438 U. S. 726
    , 745
    (1978) (opinion of Stevens, J.) (“[T]he fact that society may
    find speech offensive is not a sufficient reason for suppress-
    ing it”); Young v. American Mini Theatres, Inc., 
    427 U. S. 14
                MAHANOY AREA SCHOOL DIST. v. B. L.
    ALITO, J., concurring
    50, 63–64 (1976) (plurality opinion) (“Nor may speech be
    curtailed because it invites dispute, creates dissatisfaction
    with conditions the way they are, or even stirs people to an-
    ger”); Street v. New York, 
    394 U. S. 576
    , 592 (1969) (“It is
    firmly settled that under our Constitution the public ex-
    pression of ideas may not be prohibited merely because the
    ideas are themselves offensive to some of their hearers”). It
    is unreasonable to infer that parents who send a child to a
    public school thereby authorize the school to take away
    such a critical right.
    To her credit, petitioner’s attorney acknowledged this
    during oral argument. As she explained, even if such
    speech is deeply offensive to members of the school commu-
    nity and may cause a disruption, the school cannot punish
    the student who spoke out; “that would be a heckler’s veto.”
    Tr. of Oral Arg. 15–16.17 The school may suppress the dis-
    ruption, but it may not punish the off-campus speech that
    prompted other students to engage in misconduct. See 
    id.,
    at 5–6 (“[I]f listeners riot because they find speech offensive,
    schools should punish the rioters, not the speaker. In other
    words, the hecklers don’t get the veto”); see also 
    id.,
     at 27–
    28.
    This is true even if the student’s off-premises speech on a
    matter of public concern is intemperate and crude. When a
    student engages in oral or written communication of this
    nature, the student is subject to whatever restraints the
    student’s parents impose, but the student enjoys the same
    First Amendment protection against government regula-
    tion as all other members of the public. And the Court has
    ——————
    17 Counsel was asked what a school could have done during the Vi-
    etnam War era if a student said, “[the] war is immoral, American soldiers
    are baby killers, I hope there are a lot of casualties so that people will
    rise up.” Tr. of Oral Arg. 15. Counsel agreed that “[e]ven if that would
    cause a disruption in the school,” “the school couldn’t do anything about
    it.” 
    Ibid.
     In her words, “that would be a heckler’s veto, no can do.” 
    Id.,
    at 15–16.
    Cite as: 594 U. S. ____ (2021)                    15
    ALITO, J., concurring
    held that these rights extend to speech that is couched in
    vulgar and offensive terms. See, e.g., Iancu v. Brunetti, 588
    U. S. ___ (2019); Matal, 582 U. S. ___; Snyder v. Phelps, 
    562 U. S. 443
     (2011); Cohen v. California, 
    403 U. S. 15
     (1971);
    Brandenburg v. Ohio, 
    395 U. S. 444
     (1969) (per curiam).
    Between these two extremes (i.e., off-premises speech
    that is tantamount to on-campus speech and general state-
    ments made off premises on matters of public concern) lie
    the categories of off-premises student speech that appear to
    have given rise to the most litigation. A survey of lower
    court cases reveals several prominent categories. I will
    mention some of those categories, but like the Court, I do
    not attempt to set out the test to be used in judging the con-
    stitutionality of a public school’s efforts to regulate such
    speech.
    One group of cases involves perceived threats to school
    administrators, teachers, other staff members, or students.
    Laws that apply to everyone prohibit defined categories of
    threats,18 see, e.g., 
    18 Pa. Cons. Stat. §2706
    (a);19 
    Tex. Penal Code Ann. §22.07
    (a) (West 2020),20 but schools have
    ——————
    18 The First Amendment permits prohibitions of “true threats,” which
    are “statements where the speaker means to communicate a serious ex-
    pression of an intent to commit an act of unlawful violence to a particular
    individual or group of individuals.” Virginia v. Black, 
    538 U. S. 343
    , 359
    (2003).
    19 This law is commonly referred to as Pennsylvania’s “terrorist threat
    statute.” It prohibits “communicat[ing], either directly or indirectly, a
    threat to: (1) commit any crime of violence with intent to terrorize an-
    other; (2) cause evacuation of a building, place of assembly or facility of
    public transportation; or (3) otherwise cause serious public inconven-
    ience, or cause terror or serious public inconvenience with reckless dis-
    regard of the risk of causing such terror or inconvenience.”
    20 In Texas, it is a crime to “threate[n] to commit any offense involving
    violence to any person or property” with specified intent, such as the in-
    tent to “place another person in fear of imminent serious bodily injury”
    or to “interrupt the occupation or use of a . . . public place.”
    16            MAHANOY AREA SCHOOL DIST. v. B. L.
    ALITO, J., concurring
    claimed that their duties demand broader authority.21
    Another common category involves speech that criticizes
    or derides school administrators, teachers, or other staff
    members.22 Schools may assert that parents who send their
    children to a public school implicitly authorize the school to
    demand that the child exhibit the respect that is required
    for orderly and effective instruction, but parents surely do
    not relinquish their children’s ability to complain in an ap-
    propriate manner about wrongdoing, dereliction, or even
    plain incompetence. See Brief for College Athlete Advo-
    cates as Amicus Curiae 12–21; Brief for Student Press Law
    Center et al. as Amici Curiae 10–11, 17–20, 30.
    Perhaps the most difficult category involves criticism or
    ——————
    21 See, e.g., McNeil v. Sherwood School Dist. 88J, 
    918 F. 3d 700
    , 704
    (CA9 2019) (per curiam) (student created a “hit list” of students and drew
    graphic images of violence); Wynar v. Douglas County School Dist., 
    728 F. 3d 1062
    , 1065–1066 (CA9 2013) (student spoke about committing a
    school shooting); Wisniewski v. Board of Ed., 
    494 F. 3d 34
    , 36 (CA2 2007)
    (student sent a message depicting a pistol firing a bullet at his English
    teacher’s head); Porter v. Ascension Parish School Bd., 
    393 F. 3d 608
    , 611
    (CA5 2004) (student drew a picture showing his school under attack by
    a gasoline tanker, missile launcher, helicopter, and armed individuals);
    Doe v. Pulaski County Special School Dist., 
    306 F. 3d 616
    , 619 (CA8 2002)
    (en banc) (student drafted letters expressing a desire to molest, rape, and
    murder his ex-girlfriend); but see Conroy v. Lacey Twp. School Dist.,
    
    2020 WL 528896
    , *1 (D NJ, Jan. 31, 2020) (two high school students
    posted photos on Snapchat showing them with legally purchased guns at
    a shooting range on a Saturday, which another student claimed made
    him “ ‘nervous to come to school’ ”); see also Conroy v. Lacey Twp. School
    Dist., No. 3:19–cv–09452 (D NJ, Aug. 25, 2020) (order dismissing case
    with prejudice after settlement). The cases cited in this footnote and
    footnotes 22–23 are listed to show types of claims addressed by the lower
    courts. I do not express any view about the correctness of the decisions.
    22 See, e.g., Doninger v. Niehoff, 
    527 F. 3d 41
    , 45 (CA2 2008) (member
    of student council posted a message on her personal blog complaining
    about the administration and encouraging readers to call or e-mail the
    school to complain); Evans v. Bayer, 
    684 F. Supp. 2d 1365
    , 1367 (SD Fla.
    2010) (student created a Facebook group “for students to voice their dis-
    like” of their teacher).
    Cite as: 594 U. S. ____ (2021)                   17
    ALITO, J., concurring
    hurtful remarks about other students.23 Bullying and se-
    vere harassment are serious (and age-old) problems, but
    these concepts are not easy to define with the precision re-
    quired for a regulation of speech. See, e.g., Saxe v. State
    College Area School Dist., 
    240 F. 3d 200
    , 206–207 (CA3
    2001).
    V
    The present case does not fall into any of these categories.
    Instead, it simply involves criticism (albeit in a crude man-
    ner) of the school and an extracurricular activity. Unflat-
    tering speech about a school or one of its programs is differ-
    ent from speech that criticizes or derides particular
    individuals, and for the reasons detailed by the Court and
    by Judge Ambro in his separate opinion below, the school’s
    justifications for punishing B. L.’s speech were weak. She
    sent the messages and image in question on her own time
    while at a local convenience store. They were transmitted
    via a medium that preserved the communication for only 24
    hours, and she sent them to a select group of “friends.” She
    did not send the messages to the school or to any adminis-
    trator, teacher, or coach, and no member of the school staff
    would have even known about the messages if some of
    B. L.’s “friends” had not taken it upon themselves to spread
    the word.
    The school did not claim that the messages caused any
    significant disruption of classes. The most it asserted along
    ——————
    23 See, e.g., S. J. W. v. Lee’s Summit R–7 School Dist., 
    696 F. 3d 771
    ,
    773–774 (CA8 2012) (high school juniors posted a variety of offensive,
    racist, and sexually-explicit comments about particular female class-
    mates); Kowalski v. Berkeley County Schools, 
    652 F. 3d 565
    , 567–568
    (CA4 2011) (student created an online discussion group accusing another
    student of having a sexually-transmitted disease); Dunkley v. Board of
    Ed. of Greater Egg Harbor Regional High School Dist., 
    216 F. Supp. 3d 485
    , 487 (NJ 2016) (student used an anonymous Twitter account to insult
    other students based on their appearances and athletic abilities).
    18            MAHANOY AREA SCHOOL DIST. v. B. L.
    ALITO, J., concurring
    these lines was that they “upset” some students (including
    members of the cheerleading squad),24 caused students to
    ask some questions about the matter during an algebra
    class taught by a cheerleading coach,25 and put out “nega-
    tivity . . . that could impact students in the school.”26 The
    freedom of students to speak off-campus would not be worth
    much if it gave way in the face of such relatively minor com-
    plaints. Speech cannot be suppressed just because it ex-
    presses thoughts or sentiments that others find upsetting,
    and the algebra teacher had the authority to quell in-class
    discussion of B. L.’s messages and demand that the stu-
    dents concentrate on the work of the class.
    As for the messages’ effect on the morale of the cheerlead-
    ing squad, the coach of a team sport may wish to take group
    cohesion and harmony into account in selecting members of
    the team, in assigning roles, and in allocating playing time,
    but it is self-evident that this authority has limits. (To take
    an obvious example, a coach could not discriminate against
    a student for blowing the whistle on serious misconduct.)
    And here, the school did not simply take B. L.’s messages
    into account in deciding whether her attitude would make
    her effective in doing what cheerleaders are primarily ex-
    pected to do: encouraging vocal fan support at the events
    where they appear. Instead, the school imposed punish-
    ment: suspension for a year from the cheerleading squad
    despite B. L.’s apologies.
    There is, finally, the matter of B. L.’s language. There
    are parents who would not have been pleased with B. L.’s
    language and gesture, but whatever B. L.’s parents thought
    about what she did, it is not reasonable to infer that they
    gave the school the authority to regulate her choice of lan-
    guage when she was off school premises and not engaged in
    ——————
    
    24 App. 82
    .
    25 
    Id.,
     at 82–84.
    26 Id., at 81.
    Cite as: 594 U. S. ____ (2021)                 19
    ALITO, J., concurring
    any school activity. And B. L.’s school does not claim that
    it possesses or makes any effort to exercise the authority to
    regulate the vocabulary and gestures of all its students 24
    hours a day and 365 days a year.
    There are more than 90,000 public school principals in
    this country27 and more than 13,000 separate school dis-
    tricts.28 The overwhelming majority of school administra-
    tors, teachers, and coaches are men and women who are
    deeply dedicated to the best interests of their students, but
    it is predictable that there will be occasions when some will
    get carried away, as did the school officials in the case at
    hand. If today’s decision teaches any lesson, it must be that
    the regulation of many types of off-premises student speech
    raises serious First Amendment concerns, and school offi-
    cials should proceed cautiously before venturing into this
    territory.
    ——————
    27 See NCES, School Principals, Table 212.08: Number and Percentage
    Distribution in Public and Private Elementary and Secondary Schools,
    Selected Years 1993–1994 Through 2017–2018, https://nces.ed.gov/
    programs/digest/d19/tables/dt19_212.08.asp?current=yes.
    28 See NCES, Overview of Schools and School Districts, Table 214.10:
    Number of Public School Districts and Public and Private Elementary
    and Secondary Schools, Selected Years 1869–1870 Through 2018–2019,
    https://nces.ed.gov/programs/digest/d20/tables/dt20_214.10.asp.
    Cite as: 594 U. S. ____ (2021)            1
    THOMAS, J., dissenting
    SUPREME COURT OF THE UNITED STATES
    _________________
    No. 20–255
    _________________
    MAHANOY AREA SCHOOL DISTRICT, PETITIONER v.
    B. L., A MINOR, BY AND THROUGH HER FATHER,
    LAWRENCE LEVY AND HER MOTHER,
    BETTY LOU LEVY
    ON WRIT OF CERTIORARI TO THE UNITED STATES COURT OF
    APPEALS FOR THE THIRD CIRCUIT
    [June 23, 2021]
    JUSTICE THOMAS, dissenting.
    B. L., a high school student, sent a profanity-laced mes-
    sage to hundreds of people, including classmates and team-
    mates. The message included a picture of B. L. raising her
    middle finger and captioned “F*** school” and “f*** cheer.”
    This message was juxtaposed with another, which ex-
    plained that B. L. was frustrated that she failed to make
    the varsity cheerleading squad. The cheerleading coach re-
    sponded by disciplining B. L.
    The Court overrides that decision—without even men-
    tioning the 150 years of history supporting the coach. Us-
    ing broad brushstrokes, the majority outlines the scope of
    school authority. When students are on campus, the major-
    ity says, schools have authority in loco parentis—that is, as
    substitutes of parents—to discipline speech and conduct.
    Off campus, the authority of schools is somewhat less. At
    that level of generality, I agree. But the majority omits im-
    portant detail. What authority does a school have when it
    operates in loco parentis? How much less authority do
    schools have over off-campus speech and conduct? And how
    does a court decide if speech is on or off campus?
    Disregarding these important issues, the majority simply
    posits three vague considerations and reaches an outcome.
    2          MAHANOY AREA SCHOOL DIST. v. B. L.
    THOMAS, J., dissenting
    A more searching review reveals that schools historically
    could discipline students in circumstances like those pre-
    sented here. Because the majority does not attempt to ex-
    plain why we should not apply this historical rule and does
    not attempt to tether its approach to anything stable, I re-
    spectfully dissent.
    I
    A
    While the majority entirely ignores the relevant history,
    I would begin the assessment of the scope of free-speech
    rights incorporated against the States by looking to “what
    ‘ordinary citizens’ at the time of [the Fourteenth Amend-
    ment’s] ratification would have understood” the right to en-
    compass. McDonald v. Chicago, 
    561 U. S. 742
    , 813 (2010)
    (THOMAS, J., concurring in part and concurring in judg-
    ment). Cases and treatises from that era reveal that public
    schools retained substantial authority to discipline stu-
    dents. As I have previously explained, that authority was
    near plenary while students were at school. See Morse v.
    Frederick, 
    551 U. S. 393
    , 419 (2007) (concurring opinion).
    Authority also extended to when students were traveling to
    or from school. See, e.g., Lander v. Seaver, 
    32 Vt. 114
    , 120
    (1859). And, although schools had less authority after a
    student returned home, it was well settled that they still
    could discipline students for off-campus speech or conduct
    that had a proximate tendency to harm the school environ-
    ment.
    Perhaps the most familiar example applying this rule is
    a case where a student, after returning home from school,
    used “disrespectful language” against a teacher—he called
    the teacher “old”—“in presence of the [teacher] and of some
    of his fellow pupils.” Id., at 115 (emphasis deleted). The
    Vermont Supreme Court held that the teacher could disci-
    pline a student for this speech because the speech had “a
    Cite as: 594 U. S. ____ (2021)                     3
    THOMAS, J., dissenting
    direct and immediate tendency to injure the school, to sub-
    vert the master’s authority, and to beget disorder and in-
    subordination.” Id., at 120; see also ibid. (“direct and im-
    mediate tendency to . . . bring the master’s authority into
    contempt”). The court distinguished the speech at issue
    from speech “in no ways connected with or affecting the
    school” and speech that has “merely a remote and indirect
    tendency to injure.” Id., at 120–121. In requiring a “direct
    and immediate tendency” to harm, id., at 120, the court
    used the language of proximate causation, see Black’s Law
    Dictionary 274 (11th ed. 2019) (defining “proximate cause”
    as a “cause that directly produces an event”); id., at 1481
    (defining “proximate” as “[i]mmediately before or after”);
    see also Atchison, T. & S. F. R. Co. v. Calhoun, 
    213 U. S. 1
    ,
    7 (1909) (using “proximate” cause and “immediate” cause
    interchangeably).
    This rule was widespread. It was consistent with “the
    universal custom” in New England. Lander, 32 Vt., at 121.
    Various cases, treatises, and school manuals endorsed it.*
    And a justice of the Rhode Island Supreme Court, presiding
    over a trial, declared the rule “well settled.” T. Stockwell,
    The School Manual, Containing the School Laws of Rhode
    Island 236–238 (1882) (Stockwell).
    So widespread was this rule that it served not only as the
    basis for schools to discipline disrespectful speech but also
    to regulate truancy. Although modern doctrine draws a
    clear line between speech and conduct, cases in the 19th
    century did not. E.g., Lander, 32 Vt., at 120 (describing
    ——————
    *E.g., Deskins v. Gose, 
    85 Mo. 485
    , 488–489 (1885) (citing Lander); F.
    Burke, Law of Public Schools 116, 129 (1880) (“[W]hatsoever has a direct
    and immediate tendency to injure the school in its important interests,
    or to subvert the authority of those in charge of it, is properly a subject
    for regulation and discipline, and this is so wherever the acts may be
    committed” (citing Lander)); C. Bardeen, The New York School Office’s
    Handbook 158 (1910) (citing Lander).
    4           MAHANOY AREA SCHOOL DIST. v. B. L.
    THOMAS, J., dissenting
    speech as “acts of misbehavior”); Stockwell 236–238 (apply-
    ing the Lander rule to “[t]he conduct of pupils”); Morse, 
    551 U. S., at 419
     (THOMAS, J., concurring) (“speech rules and
    other school rules were treated identically”).          Citing
    Lander, schools justified regulating truancy because of its
    proximate tendency to harm schools. As the Missouri Su-
    preme Court put it, although “[t]ruancy is an act committed
    out of the school,” schools could regulate it because of its
    “subversive” effects on the “good order and discipline of the
    school.” Deskins v. Gose, 
    85 Mo. 485
    , 488–489 (1885); see
    also Burdick v. Babcock, 
    31 Iowa 562
    , 565, 567 (1871) (“If
    the effects of acts done out of school-hours reach within the
    schoolroom during school hours and are detrimental to good
    order and the best interest of the pupils, it is evident that
    such acts may be forbidden”).
    Some courts made statements that, if read in isolation,
    could suggest that schools had no authority at all to regu-
    late off-campus speech. E.g., Dritt v. Snodgrass, 
    66 Mo. 286
    , 297 (1877) (Norton, J., joined by a majority of the court,
    concurring) (“neither the teacher nor directors have the au-
    thority to follow [a student home], and govern his conduct
    while under the parental eye” because that would “super-
    sede entirely parental authority”). But, these courts made
    it clear that the rule against regulating off-campus speech
    applied only when that speech was “nowise connected with
    the management or successful operation of the school.”
    King v. Jefferson City School Bd., 
    71 Mo. 628
    , 630 (1880)
    (distinguishing Dritt); accord, Lander, 32 Vt., at 120–121
    (similar). In other words, they followed Lander: A school
    can regulate speech when it occurs off campus, so long as it
    has a proximate tendency to harm the school, its faculty or
    students, or its programs.
    B
    If there is a good constitutional reason to depart from this
    historical rule, the majority and the parties fail to identify
    Cite as: 594 U. S. ____ (2021)             5
    THOMAS, J., dissenting
    it. I would thus apply the rule. Assuming that B. L.’s
    speech occurred off campus, the purpose and effect of B. L.’s
    speech was “to degrade the [program and cheerleading
    staff]” in front of “other pupils,” thus having “a direct and
    immediate tendency to . . . subvert the [cheerleading
    coach’s] authority.” Id., at 115, 120. As a result, the coach
    had authority to discipline B. L.
    Our modern doctrine is not to the contrary. “[T]he penal-
    ties imposed in this case were unrelated to any political
    viewpoint” or religious viewpoint. Bethel School Dist. No.
    403 v. Fraser, 
    478 U. S. 675
    , 685 (1986). And although the
    majority sugar coats this speech as “criticism,” ante, at 8, it
    is well settled that schools can punish “vulgar” speech—at
    least when it occurs on campus, e.g., Fraser, 
    478 U. S., at
    683–684; ante, at 5.
    The discipline here—a 1-year suspension from the
    team—may strike some as disproportionate. Tr. of Oral
    Arg. 31, 57. But that does not matter for our purposes.
    State courts have policed school disciplinary decisions for
    “reasonable[ness].” E.g., Burdick, 31 Iowa, at 565. And dis-
    proportionate discipline “can be challenged by parents in
    the political process.” Morse, 
    551 U. S., at 420
     (THOMAS, J.,
    concurring). But the majority and the parties provide no
    textual or historical evidence to suggest that federal courts
    generally can police the proportionality of school discipli-
    nary decisions in the name of the First Amendment.
    II
    The majority declines to consider any of this history, in-
    stead favoring a few pragmatic guideposts. This is not the
    first time the Court has chosen intuition over history when
    it comes to student speech. The larger problem facing us
    today is that our student-speech cases are untethered from
    any textual or historical foundation. That failure leads the
    majority to miss much of the analysis relevant to these
    kinds of cases.
    6           MAHANOY AREA SCHOOL DIST. v. B. L.
    THOMAS, J., dissenting
    A
    Consider the Court’s longtime failure to grapple with the
    historical doctrine of in loco parentis. As I have previously
    explained, the Fourteenth Amendment was ratified against
    the background legal principle that publicly funded schools
    operated not as ordinary state actors, but as delegated sub-
    stitutes of parents. 
    Id.,
     at 411–413. This principle freed
    schools from the constraints the Fourteenth Amendment
    placed on other government actors. “[N]o one doubted the
    government’s ability to educate and discipline children as
    private schools did,” including “through strict discipline . . .
    for behavior the school considered disrespectful or wrong.”
    
    Id.,
     at 411–412. “The doctrine of in loco parentis limited the
    ability of schools to set rules and control their classrooms in
    almost no way.” 
    Id., at 416
    .
    Plausible arguments can be raised in favor of departing
    from that historical doctrine.        When the Fourteenth
    Amendment was ratified, just three jurisdictions had com-
    pulsory-education laws. M. Katz, A History of Compulsory
    Education Laws 17 (1976). One might argue that the dele-
    gation logic of in loco parentis applies only when delegation
    is voluntary. But cf. 
    id.,
     at 11–13 (identifying analogs to
    compulsory-education laws as early as the 1640s); Pierce v.
    Society of Sisters, 
    268 U. S. 510
     (1925) (requiring States to
    permit parents to send their children to nonpublic schools).
    The Court, however, did not make that (or any other) argu-
    ment against this historical doctrine.
    Instead, the Court simply abandoned the foundational
    rule without mentioning it. See Tinker v. Des Moines Inde-
    pendent Community School Dist., 
    393 U. S. 503
     (1969). Ra-
    ther than wrestle with this history, the Court declared that
    it “ha[d] been the unmistakable holding of this Court for
    almost 50 years” that students have free-speech rights in-
    side schools. 
    Id., at 506
    . “But the cases the Court cited in
    favor of that bold proposition do not support it.” Morse, 
    551 U. S., at 420, n. 8
     (THOMAS, J., concurring). The cases on
    Cite as: 594 U. S. ____ (2021)             7
    THOMAS, J., dissenting
    which Tinker chiefly relied concerned the rights of parents
    and private schools, not students. 
    551 U. S., at 420, n. 8
    .
    Of the 11 cases the Court cited, only one—West Virginia Bd.
    of Ed. v. Barnette, 
    319 U. S. 624
     (1943)—was on point. But,
    like Tinker, Barnette failed to mention the historical doc-
    trine undergirding school authority. Not until decades later
    did the Court even hint at this doctrine, and, then, only as
    an aside. See Fraser, 
    478 U. S., at 684
    .
    The majority does no better today. At least it acknowl-
    edges that schools act in loco parentis when students speak
    on campus. See, e.g., ante, at 5. But the majority fails to
    address the historical contours of that doctrine, whether the
    doctrine applies to off-campus speech, or why the Court has
    abandoned it.
    B
    The Court’s failure to explain itself in Tinker needlessly
    makes this case more difficult. Unlike Tinker, which in-
    volved a school’s authority under a straightforward fact
    pattern, this case involves speech made in one location but
    capable of being received in countless others—an issue that
    has been aggravated exponentially by recent technological
    advances. The Court’s decision not to create a solid founda-
    tion in Tinker, and now here not to consult the relevant his-
    tory, predictably causes the majority to ignore relevant
    analysis.
    First, the majority gives little apparent significance to
    B. L.’s decision to participate in an extracurricular activity.
    But the historical test suggests that authority of schools
    over off-campus speech may be greater when students par-
    ticipate in extracurricular programs. The Lander test fo-
    cuses on the effect of speech, not its location. So students
    like B. L. who are active in extracurricular programs have
    a greater potential, by virtue of their participation, to harm
    those programs. For example, a profanity-laced screed de-
    livered on social media or at the mall has a much different
    8           MAHANOY AREA SCHOOL DIST. v. B. L.
    THOMAS, J., dissenting
    effect on a football program when done by a regular student
    than when done by the captain of the football team. So, too,
    here.
    Second, the majority fails to consider whether schools of-
    ten will have more authority, not less, to discipline students
    who transmit speech through social media. Because off-
    campus speech made through social media can be received
    on campus (and can spread rapidly to countless people), it
    often will have a greater proximate tendency to harm the
    school environment than will an off-campus in-person con-
    versation.
    Third, and relatedly, the majority uncritically adopts the
    assumption that B. L.’s speech, in fact, was off campus.
    But, the location of her speech is a much trickier question
    than the majority acknowledges. Because speech travels,
    schools sometimes may be able to treat speech as on campus
    even though it originates off campus. Nobody doubts, for
    example, that a school has in loco parentis authority over a
    student (and can discipline him) when he passes out vulgar
    flyers on campus—even if he creates those flyers off cam-
    pus. The same may be true in many contexts when social
    media speech is generated off campus but received on cam-
    pus. To be sure, this logic might not apply where the on-
    campus presence of speech is not proximately connected to
    its off-campus origin—as when a student “wholly acci-
    dental[ly]” brings a sibling’s sketch to school years after it
    is created. Porter v. Ascension Parish School Bd., 
    393 F. 3d 608
    , 615, 617–618 (CA5 2004). This break in proximate
    causation might occur more often when a school prohibits
    the use of personal devices or social media on campus. See
    Tr. of Oral Arg. 68–69. But where it is foreseeable and
    likely that speech will travel onto campus, a school has a
    stronger claim to treating the speech as on-campus speech.
    Here, it makes sense to treat B. L.’s speech as off-campus
    speech. There is little evidence that B. L.’s speech was re-
    ceived on campus. The cheerleading coach, in fact, did not
    Cite as: 594 U. S. ____ (2021)              9
    THOMAS, J., dissenting
    view B. L.’s speech. She viewed a copy of that speech (a
    screenshot) created by another student. Ante, at 2. But,
    the majority mentions none of this. It simply, and uncriti-
    cally, assumes that B. L.’s speech was off campus. Because
    it creates a test untethered from history, it bypasses this
    relevant inquiry.
    *     *     *
    The Court transparently takes a common-law approach
    to today’s decision. In effect, it states just one rule: Schools
    can regulate speech less often when that speech occurs off
    campus. It then identifies this case as an “example” and
    “leav[es] for future cases” the job of developing this new
    common-law doctrine. Ante, at 7–8. But the Court’s foun-
    dation is untethered from anything stable, and courts (and
    schools) will almost certainly be at a loss as to what exactly
    the Court’s opinion today means.
    Perhaps there are good constitutional reasons to depart
    from the historical rule, and perhaps this Court and lower
    courts will identify and explain these reasons in the future.
    But because the Court does not do so today, and because it
    reaches the wrong result under the appropriate historical
    test, I respectfully dissent.