DL v. DC , 860 F.3d 713 ( 2017 )


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  •  United States Court of Appeals
    FOR THE DISTRICT OF COLUMBIA CIRCUIT
    Argued March 31, 2017                  Decided June 23, 2017
    No. 16-7076
    DL, ET AL.,
    APPELLEES
    v.
    DISTRICT OF COLUMBIA, A MUNICIPAL CORPORATION, ET AL.,
    APPELLANTS
    Appeal from the United States District Court
    for the District of Columbia
    (No. 1:05-cv-01437)
    Lucy E. Pittman, Assistant Attorney General, Office of the
    Attorney General for the District of Columbia, argued the cause
    for appellants. With her on the briefs were Karl A. Racine,
    Attorney General, Todd S. Kim, Solicitor General, and Loren
    L. AliKhan, Deputy Solicitor General.
    Todd A. Gluckman argued the cause for appellees. With
    him on the brief were Margaret A. Kohn, Cyrus Mehri, Carolyn
    S. Pravlik, and Patrick A. Sheldon.
    Iris Y. González, Daniel B. Kohrman, Kelly R. Bagby,
    Sharon Krevor-Weissbaum, Ira A. Burnim, Mary Nell
    McGarity Clark, and Martha Jane Perkins were on the brief
    2
    for amici curiae AARP, et al. in support of appellees. Jon M.
    Greenbaum entered an appearance.
    Before: TATEL, GRIFFITH and MILLETT, Circuit Judges.
    Opinion for the Court filed by Circuit Judge TATEL.
    TATEL, Circuit Judge: More than a decade ago, the parents
    of six children, ages three to six, sued the District of Columbia,
    alleging that it was violating the “Child Find” requirement of
    the Individuals with Disabilities Education Act by failing to
    provide special education to their children and hundreds of
    other preschoolers with disabilities. The district court certified
    the suit as a class action under Federal Rule of Civil Procedure
    23, found the District liable, and entered a comprehensive
    injunction designed to bring the District into compliance with
    IDEA. On appeal, the District argues that the case has become
    moot because the six named plaintiffs are no longer toddlers
    with a stake in the requested relief. The District also challenges
    the class certification and argues that the injunction exceeds the
    district court’s authority. For the reasons set forth in this
    opinion, we affirm in all respects.
    I.
    For much of this nation’s history, children with disabilities
    “were either totally excluded from schools or were sitting idly
    in regular classrooms awaiting the time when they were old
    enough to drop out.” Board of Education of Hendrick Hudson
    Central School District v. Rowley, 
    458 U.S. 176
    , 179 (1982)
    (alteration and internal quotation marks omitted). Faced with
    this “pervasive and tragic academic stagnation,” Congress
    passed the Education of the Handicapped Act of 1975 (EHA).
    Endrew F. ex rel. Joseph F. v. Douglas County School District
    RE-1, 
    137 S. Ct. 988
    , 999 (2017). That “ambitious” law,
    
    Rowley, 458 U.S. at 179
    , which applied to public schools
    3
    receiving federal funds, sought to provide all children with
    disabilities a “free appropriate public education . . . tailored to
    [their] unique needs,” 
    id. at 180.
    Fifteen years later, finding that EHA implementation had
    “been impeded by low expectations” and resource constraints,
    20 U.S.C. § 1400(c)(4)-(7), Congress strengthened the statute
    and renamed it the Individuals with Disabilities Education Act
    (IDEA), see Pub. L. No. 101-476, § 901, 104 Stat. 1103 (1990).
    This time Congress drew on its authority under the Spending
    Clause to offer states a deal: in exchange for additional federal
    funding, they would “pledge[] to comply” with a series of
    requirements designed to ensure that each student receives a
    “free appropriate public education,” or FAPE. Endrew 
    F., 137 S. Ct. at 993
    ; see U.S. CONST., Art. I, § 8, cl. 1. Among the
    most important of these requirements, the “Child Find”
    provision obliges states to develop a “practical method” to
    track which children are receiving special education services
    and to ensure that all children “who are in need of special
    education and related services . . . are identified, located, and
    evaluated” within a timeframe set by the state—120 days in this
    case. 20 U.S.C. § 1412(a)(3)(A); see 20 U.S.C.
    § 1414(a)(1)(C)(i)(I) (authorizing states to “establish[] a
    timeframe within which the evaluation must be conducted”);
    D.C. Code § 38-2561.02(a)(1) (requiring an evaluation “within
    120 days from the date the student was referred for an
    evaluation”). Another requirement, the “smooth and effective
    transition” condition, obliges states to provide a seamless
    transition when three-year-olds move from “early
    intervention” programs (governed by IDEA Part C) to
    preschool (governed by IDEA Part B). 20 U.S.C.
    §§ 1412(a)(9), 1435(a)(8)(A), 1437(a)(9); 34 C.F.R.
    § 303.209. The transition between these programs qualifies as
    “smooth and effective” if, among other things, it begins at least
    ninety days before the child’s third birthday, delivers
    4
    uninterrupted services, and involves both Part B and C
    personnel. 20 U.S.C. § 1412(a)(9); 34 C.F.R. § 303.209. In the
    District of Columbia, which IDEA defines as a state, see 20
    U.S.C. § 1401(31), and which receives millions of dollars of
    IDEA funding each year, early intervention programs are run
    by the Office of the State Superintendent of Education and
    preschool programs by the District of Columbia Public Schools
    (DCPS).
    In 2005, the parents of six children, ages three to six, sued
    the District, alleging a “pervasive and systemic” breakdown in
    the school system’s Child Find program. D.L. v. District of
    Columbia, No. 05-cv-1437, ECF No. 1, at 3 (D.D.C. July 21,
    2005). According to the complaint, the District was failing to
    identify large numbers of disabled children and delivering
    inadequate and delayed services to many others. These
    deficiencies, the parents argued, were depriving “hundreds” of
    preschoolers of their right to a FAPE. 
    Id. The district
    court, Judge Royce C. Lamberth, certified the
    suit as a class action in 2006. D.L. v. District of Columbia, 
    237 F.R.D. 319
    (D.D.C. 2006). The class definition was broad: “All
    children [between three and five] who are or may be eligible
    for special education and related services, who live in, or are
    wards of, the District of Columbia” and whom the District had
    failed or would fail to “identify, locate, evaluate or offer special
    education and related services.” 
    Id. at 324–25.
    Four years later,
    the parties each moved for summary judgment. After reviewing
    the record, the district court granted summary judgment to the
    parents with respect to their claims up to and through 2007 and
    scheduled a bench trial on all remaining claims. D.L. v. District
    of Columbia, 
    730 F. Supp. 2d
    . 84, 95, 98 (D.D.C. 2010).
    During that trial, the court heard two days of testimony from
    statisticians, school district staff, and experts in education
    policy and early childhood development.
    5
    After trial but before the district court issued its decision,
    the Supreme Court decided Wal-Mart Stores, Inc. v. Dukes,
    which held that “one of the most expansive class[es] ever” was
    too broad to meet the requirements of Federal Rule of Civil
    Procedure 23. 
    564 U.S. 338
    , 342 (2011). Relying on Wal-Mart,
    the District moved to decertify the class, arguing that it was
    similarly overbroad. Although the parents insisted that the class
    complied with Wal-Mart, they suggested that if the court had
    any doubt it should recertify the class as four subclasses of
    children whom the District had failed to (1) identify, (2) timely
    evaluate, (3) offer a timely determination of eligibility for
    special education and related services, and (4) provide a
    smooth transition from early intervention programs to
    preschool. D.L., ECF No. 271-2, at 7–8 (Aug. 18, 2011).
    Satisfied that the certified class complied with Wal-Mart,
    however, the district court deemed subclasses unnecessary.
    D.L. v. District of Columbia, 
    277 F.R.D. 38
    , 46–47 (D.D.C.
    2011).
    The court then found the District liable for violating its
    Child Find obligations and failing to ensure a “smooth and
    effective transition” for toddlers entering preschool. D.L. v.
    District of Columbia, 
    845 F. Supp. 2d 1
    , 21–23 (D.D.C. 2011).
    These violations, Judge Lamberth observed, deprived “some of
    our most vulnerable citizens” of services in the “first few
    years” of their lives, a “narrow window of opportunity in which
    special education, tailored to the child’s particular needs, can
    work a miracle.” 
    Id. at 5.
    Based on these findings, the court
    entered a comprehensive injunction that set compliance
    benchmarks and required annual improvement in the numbers
    of children identified as needing, evaluated for, and offered
    special education and related services.
    The District appealed, and this court vacated the class
    certification order. D.L. v. District of Columbia, 
    713 F.3d 120
    ,
    6
    121 (D.C. Cir. 2013). Citing Wal-Mart, we held that a class
    defined by reference “to the District’s pattern and practice of
    failing to provide FAPEs speaks too broadly because it
    constitutes only an allegation that the class members ‘have all
    suffered a violation of the same provision of law.’” 
    Id. (quoting Wal-Mart,
    546 U.S. at 350). We noted that the parents
    “appeared to recognize [this] problem,” and had proposed
    subclasses tied to failures in four distinct administrative
    functions. 
    Id. at 128.
    Rather than deciding whether those
    subclasses satisfied Wal-Mart, we remanded to the district
    court to consider that question in the first instance.
    The district court then certified the same four subclasses the
    parents had proposed: (1) disabled three-to-five-year-olds
    whom the District failed to identify for the purpose of offering
    special education services; (2) disabled three-to-five-year-olds
    whom the District failed to give an initial evaluation within 120
    days of being referred for special education services; (3)
    disabled three-to-five-year-olds whom the District failed to
    give an “eligibility determination”—i.e., a decision as to
    whether they qualify for IDEA services—within 120 days of
    being referred; and (4) all children who transitioned from early
    intervention to preschool programs, and whom the District
    denied a “smooth transition” by age three. This court denied
    the District’s petition for interlocutory review, In re District of
    Columbia, No. 13-8009, Doc. No. 1477562 (D.C. Cir. Jan. 30,
    2014), and the case once again advanced to summary
    judgment, where the district court entered judgment for the
    District on all claims concerning subclass two, and then on to
    a bench trial. D.L. v. District of Columbia, 
    109 F. Supp. 3d 12
    ,
    36 (D.D.C. 2015). After considering testimony from seventeen
    witnesses and reviewing hundreds of exhibits, the district court
    issued a 130-page opinion finding the District liable for
    violating IDEA. D.L. v. District of Columbia, 
    194 F. Supp. 3d 30
    (D.D.C. 2016).
    7
    The district court’s findings were stark. It found that the
    District was failing to identify between 98 and 515 children a
    month—some two percent of preschoolers with disabilities
    who should have been located and offered special education
    services. 
    Id. at 48.
    This placed the District’s Child Find
    performance below jurisdictions with comparable rates of
    childhood disability, such as Arkansas, Kentucky, and Puerto
    Rico. 
    Id. at 48,
    53. In addition, the court found that the District
    was failing to provide a “smooth and effective transition” to
    almost 30 percent of disabled toddlers, 
    id. at 63,
    and despite
    having the “longest period of time in the country” to decide
    whether children qualify for special education services, was
    missing the deadline for issuing eligibility determinations
    approximately 20 percent of the time, 
    id. at 58–59.
    Acknowledging that the District had improved its Child
    Find program since 2007, when it had “the lowest percentage”
    of special education enrollment in the United States, the court
    stressed that “the District ha[d] yet to attain a period of
    sustained compliance.” 
    Id. at 78,
    98. Indeed, the court
    observed, the numbers of children receiving special education
    had fallen by 15 percent in 2013 and 2014 when the District
    lacked “an enrollment benchmark”—i.e., a target number of
    children who should be enrolled in special education and
    related services. 
    Id. at 51.
    Given these deficiencies, the court
    concluded that injunctive relief was necessary and, drawing on
    its “broad authority to grant ‘appropriate’ relief,’” Forest
    Grove School District v. T.A., 
    557 U.S. 230
    , 239 (2009)
    (construing 20 U.S.C. § 1415(i)(2)(C)(iii)), crafted remedies
    for the three remaining subclasses.
    For subclass one—children the District was failing to
    identify—the court set an 8.5 percent enrollment target, a
    figure drawn from national rates of special education
    enrollment and expert testimony concerning risk factors unique
    8
    to Washington, D.C. To reach that target, the court required the
    District to increase enrollment rates by half a percent each year.
    For subclass three—children denied timely eligibility
    determinations—the court ordered the District to meet the
    statutory deadline 95 percent of the time and to improve its
    performance annually until it reached that level. Similarly, for
    subclass four—toddlers transitioning to preschool—the court
    required annual improvement, with an ultimate goal of 95
    percent compliance. The court also imposed a range of
    “programmatic” remedies designed to improve the District’s
    methods of finding and tracking children in its system. D.L. v.
    District of Columbia, 
    194 F. Supp. 3d 30
    , 101–03. These
    remedies included requirements that the District establish
    databases, disseminate information to parents, and report its
    progress to the court.
    On appeal, the District challenges none of the district
    court’s basic findings: that it was failing to identify children
    with disabilities, that it often missed the deadline for issuing
    eligibility determinations, and that it was providing a rocky
    transition to toddlers entering preschool. Instead, it argues that:
    (1) the case is moot because by the time the district court
    certified the subclasses in 2013 each named plaintiff was over
    age five, (2) class certification was improper under Wal-Mart,
    and (3) the injunction was unauthorized by IDEA and
    unsupported by the evidentiary record.
    Before considering these arguments, we think it helpful to
    note that the parents who brought this case are not the only ones
    concerned with the District’s IDEA compliance. Since at least
    1997, the U.S. Department of Education, which oversees state
    performance under IDEA, has repeatedly warned the District
    that it was neglecting its Child Find obligations. See 
    id. at 72–
    78 (documenting the Department’s correspondence with the
    District since the mid-1990s); see also 20 U.S.C. § 1416(d)-(e)
    9
    (authorizing the Secretary of Education to review state IDEA
    compliance and to withhold federal funds). In 1998, the
    Department “entered into a Compliance Agreement with DCPS
    mandating full compliance with the requirements of Part B of
    the IDEA.” 
    D.L., 194 F. Supp. 3d at 76
    . In the two decades
    since, the Department has nonetheless regularly listed DCPS as
    a school district that “needs intervention.” 
    Id. at 73–79.
    According to the Department, the District has been especially
    deficient in its duty to timely evaluate children referred for
    special education by a parent, teacher, or pediatrician. 
    Id. at 73.
    The Department even withheld a portion of the District’s
    funding in 2009. 
    Id. at 77.
    Although the record here reveals no
    specific link between the Department’s actions and this case,
    the subclass two complaints, which focus on the same problem
    with timely evaluation, have been resolved. See D.L. v. District
    of Columbia, 
    109 F. Supp. 3d 12
    , 36 (D.D.C. 2015) (granting
    summary judgment as to subclass two). This case now involves
    identification (subclass one), eligibility determinations
    (subclass three), and transition to preschool (subclass four).
    II.
    Beginning with mootness, we start from a point on which
    the parties agree: when the district court certified subclasses,
    the named plaintiffs’ individual claims for injunctive relief
    were moot because, by that time, each child was older than five
    and, according to the District, had received special education
    services. The District argues that this rendered the dispute non-
    justiciable. According to the parents, however, two exceptions
    to the mootness doctrine apply: first, a “relation back”
    exception, which permits class actions to proceed when a
    named plaintiff’s individual claim becomes moot only after a
    district court’s error; and second, the “inherently transitory”
    exception, which applies to claims so fleeting that “the trial
    court will not have even enough time to rule” on class
    certification before the named plaintiff’s claim expires.
    10
    Genesis Healthcare Corp. v. Symczyk, 
    133 S. Ct. 1523
    , 1530–
    31 (2013) (citation and internal quotation marks omitted).
    The Supreme Court articulated the first of these exceptions
    in United States Parole Commission v. Geraghty, 
    445 U.S. 388
    (1980). In that case, a prisoner challenged the constitutionality
    of the federal parole guidelines, the district court erroneously
    denied the prisoner’s request for class certification, and the
    prisoner was released before the Third Circuit could correct the
    error. 
    Id. at 394.
    The Court held that where an action “would
    have acquired the independent legal status” of a class action
    “but for the district court’s erroneous denial of class
    certification, a corrected ruling on appeal ‘relates back’ to the
    time of the erroneous denial.” Genesis 
    Healthcare, 133 S. Ct. at 1530
    (describing the rule in Geraghty).
    The parents argue that this case is just like Geraghty. We
    agree. Here, the district court ruled that an overly broad class
    satisfied Wal-Mart, an error this court corrected on appeal. 
    See supra
    5–6. Like the plaintiffs in Geraghty, the parents had live
    claims when they sought certification, and but for the district
    court’s error, could have obtained proper class certification
    before their individual claims became moot. Under Geraghty,
    then, the case remains justiciable.
    Resisting this conclusion, the District argues that Geraghty
    applies only when a court erroneously denies class
    certification. In support, the District points out that the
    Supreme Court stated in Geraghty that its holding was “limited
    to the appeal of the denial of the class certification motion.”
    
    Geraghty, 445 U.S. at 404
    . The District reads too much into the
    word “denial.” The point in Geraghty was that claims relate
    back when a trial court’s error prevents a class from gaining
    independent status under Rule 23. Whether that error is the
    erroneous denial of class certification (as in Geraghty) or the
    11
    erroneous certification of an excessively broad class (as here)
    makes no difference. What matters is that the named plaintiffs’
    claims became moot—and their class therefore never
    “acquired . . . independent legal status,” Genesis 
    Healthcare, 133 S. Ct. at 1530
    —due to the district court’s mistake. In other
    words, but for the district court’s error—certifying an overly
    broad class—the parents’ claims would not have become moot.
    There is no legally relevant difference between this case and
    Geraghty.
    The District insists that the parents could have avoided this
    entire problem by finding new toddler-plaintiffs in 2013 when
    this court remanded the case to the district court. This misses
    the point: when the relation back doctrine applies, as it does
    here, named plaintiffs have no obligation to find new class
    representatives even if they could.
    Permitting relation back in this case is also consistent with
    Rule 23’s purpose. As the Supreme Court explained in
    Geraghty, the “justifications that led to the development of the
    class action include . . . the provision of a convenient and
    economical means for disposing of similar lawsuits[] and the
    facilitation of the spreading of litigation costs among numerous
    litigants with similar 
    claims.” 445 U.S. at 402
    –03 (citing
    Advisory Committee Notes on Fed. R. Civ. P. 23). Those
    interests are served by a rule allowing class claims to proceed
    when a district court erroneously certifies too broad a class
    while plaintiffs’ claims are live, only to be reversed and
    instructed to consider smaller subclasses containing exactly the
    same children. By contrast, Rule 23’s purpose would be
    disserved by a rule, advocated by the District, requiring parents
    to find new named plaintiffs at every turn of inevitably
    protracted class litigation.
    12
    Ultimately, the District’s argument runs counter to the
    Supreme Court’s instruction in Geraghty that “Art[icle] III
    mootness doctrine” has a “flexible character.” 
    Id. at 400.
    Mootness is a pragmatic doctrine meant to limit “judicial
    power to disputes capable of judicial resolution.” 
    Id. at 396;
    cf.
    Campbell-Ewald Co. v. Gomez, 
    136 S. Ct. 663
    , 669 (2016) (“A
    case becomes moot . . . ‘only when it is impossible for a court
    to grant any effectual relief whatever to the prevailing party.’”
    (quoting Knox v. Service Employees, 
    132 S. Ct. 2277
    , 2287
    (2012))). In this case, the mootness issue stems neither from
    the lack of real dispute nor from any deficiency in the parents’
    advocacy, but rather from judicial error. The separation of
    powers concerns that animate justiciability jurisprudence are
    absent in this context. In Geraghty, the Court emphasized that
    the two elements of a justiciable controversy—“sharply
    presented issues in a concrete factual setting and self-interested
    parties vigorously advocating opposing positions”—can “exist
    with respect to . . . class certification . . . notwithstanding the
    fact that the named plaintiff’s claim on the merits has 
    expired.” 445 U.S. at 403
    . Both elements remain present here.
    Citing Genesis 
    Healthcare, 133 S. Ct. at 1523
    , the District
    argues that “[n]o exception to the mootness doctrine allowed”
    certification in 2013. Appellants’ Br. 30. The question in
    Genesis Healthcare was whether the relation back doctrine
    applied when an individual claim under the Fair Labor
    Standards Act (FLSA) expired before certification of a
    “collective action,” an opt-in procedure established by FLSA
    for litigating multiple claims. See 29 U.S.C. § 216(b). The
    Court held that it did not and that the action was therefore non-
    justiciable. Genesis 
    Healthcare, 133 S. Ct. at 1530
    –32. In
    reaching this conclusion, however, the Court relied not just on
    relation back cases, but “[m]ore fundamentally” on the
    distinction between FLSA collective actions, which do not
    “produce a class with an independent legal status,” and Rule 23
    13
    class actions, which do. 
    Id. at 1530.
    The outcome in Genesis
    Healthcare thus hinged on the unique features of the FLSA
    cause of action. In this case, by contrast, we are clearly in Rule
    23-land and guided by Geraghty.
    Having concluded that the relation back doctrine applies,
    we have no need to consider whether the parents’ claims also
    fall under the “inherently transitory” exception to mootness. 
    Id. at 1530–31.
    We thus turn to the District’s challenge to class
    certification.
    III.
    Federal Rule of Civil Procedure 23 requires plaintiffs to
    show that:
    (1) the class is so numerous that joinder of all members
    is impractical;
    (2) there are questions of law or fact common to the
    class;
    (3) the claims or defenses of the representative parties
    are typical of the claims or defenses of the class;
    and
    (4) the representative parties will fairly and adequately
    protect the interests of the class.
    If the action satisfies these prerequisites, plaintiffs must then
    demonstrate that their proposed class falls into one of the
    categories of class actions listed in Rule 23(b). In this case, the
    district court certified subclasses under Rule 23(b)(2), which
    applies when the defendant “has acted or refused to act on
    grounds that apply generally to the class, so that final injunctive
    relief or corresponding declaratory relief is appropriate
    14
    respecting the class as a whole.” Courts may certify classes
    under this provision “only when a single injunction or
    declaratory judgment would provide relief to each member of
    the class.” 
    Wal-Mart, 564 U.S. at 360
    .
    The Supreme Court interpreted these requirements in Wal-
    Mart, in which named plaintiffs seeking to represent 1.5
    million women sued the retail giant Wal-Mart under Title VII
    of the Civil Rights Act of 1964, alleging endemic sex
    discrimination in pay and promotions across the company’s
    “approximately 3,400 stores.” 
    Id. at 342.
    The district court
    certified a class of “all women employed at any Wal-Mart
    domestic retail store at any time [in the prior thirteen years]
    who [had] been or may be subjected to” the company’s
    challenged policies and practices. 
    Id. at 346
    (alterations and
    internal quotation marks omitted).
    Explaining that the class lacked commonality, the Court
    reversed. “Commonality requires the plaintiff to demonstrate
    that the class members have suffered the same injury,” the
    Court observed. 
    Id. at 349–50
    (citation and internal quotation
    marks omitted). Yet there are multiple theories of Title VII
    liability—that statute can, “for example, . . . be violated . . . by
    intentional discrimination, or by hiring and promotion criteria
    that result in disparate impact, and by the use of these practices
    on the part of many different superiors in a single company.”
    
    Id. at 350.
    Given this, the Court concluded, the assertion that
    Wal-Mart had violated Title VII in one way or another as to
    each employee did not demonstrate “that all their claims
    [could] productively be litigated at once.” 
    Id. Instead, plaintiffs
    needed a “common contention . . . of such a nature that it is
    capable of classwide resolution—which means that
    determination of its truth or falsity will resolve an issue that is
    central to the validity of each one of the claims in one stroke.”
    
    Id. 15 As
    mentioned above, our court has already considered Wal-
    Mart’s applicability to this case. We rejected the first certified
    class, which included all three-to-five-year-olds allegedly
    denied a FAPE, because it spanned “different policies and
    practices at different stages of the District’s Child Find and
    FAPE process.” 
    D.L., 713 F.3d at 127
    . “For some plaintiffs,”
    we explained, “the alleged harm suffered is due to the failure
    of the District to have an effective intake and referral process;
    for others the alleged harm is caused by the District’s failure to
    offer adequate and timely education placements . . . ; for still
    others, the cause is the absence of a smooth and effective
    transition . . . .” 
    Id. at 128.
    Seeming to agree that narrower
    subclasses could resolve the commonality problem, the District
    argued that the class violated Wal-Mart because it “cover[ed]
    failures in four distinct administrative functions: (1)
    identification of a child . . . , (2) location of that child, (3)
    evaluation for potential services, and (4) if necessary, provision
    of services.” 
    Id. (quoting Appellant’s
    Br. 29).
    On remand, the district court addressed just this defect,
    certifying subclasses tied to separate phases of the Child Find
    process. Three of those subclasses consist of three-to-five-year-
    olds whom the District had failed to (1) identify, (2) evaluate
    within 120 days of referral, and (3) provide an eligibility
    determination within 120 days of referral. The fourth subclass
    contains all children with disabilities denied smooth transitions
    from early intervention to preschool programs. Although these
    four subclasses appear responsive to both our 2013 opinion and
    the District’s concerns, this time around the District argues that
    they too are insufficient under Wal-Mart. Once again, then, we
    review the district court’s certification order for abuse of
    discretion. Hartman v. Duffey, 
    19 F.3d 1459
    , 1471 (D.C. Cir.
    1994) (“[W]e review a class certification decision
    conservatively only to ensure against abuse of discretion or
    erroneous application of legal criteria.”). We find none.
    16
    The three subclasses at issue here (recall that the court
    resolved subclass two claims before trial) are each defined by
    reference to a “uniform policy or practice” governing a specific
    stage of the special education process. 
    D.L., 713 F.3d at 127
    .
    Whereas before the parents’ claims were united only by a
    shared allegation of IDEA liability, now the suit has subclasses
    cast around “common harm[s],” 
    id. at 128,
    susceptible to
    common proof, and curable by a “single injunction,” Wal-
    
    Mart, 564 U.S. at 360
    .
    Take subclass one, children with disabilities whom the
    District failed to find. These children identified a common
    harm, namely, denial of a FAPE due to a deficient and poorly
    implemented Child Find policy. This contention, as is evident
    from the district court’s findings, is subject to common proof:
    after reviewing the evidence, the court found that the District
    was failing to identify 98 to 515 children a month. This
    violation of the statute can, as is also evident from the district
    court’s decision, be remedied by a single order, i.e., an
    injunction requiring the District to identify 0.5 percent more
    children each year until it reaches 8.5 percent enrollment.
    As with subclass-one parents, the parents of subclass-three
    children allege a common harm: contrary to the District’s own
    policy, their children had not received eligibility
    determinations within 120 days of being referred for a
    disability evaluation. Again, this contention can be proved with
    common facts, as the district court demonstrated: it found that
    20 percent of preschoolers referred for a disability evaluation
    received an eligibility determination after the statutory
    deadline, if it all. And here, too, a single injunction can remedy
    the harm: the court required the District to meet its statutory
    deadline 95 percent of the time and to improve its performance
    by 10 percent in the first year and 5 percent each year
    thereafter.
    17
    The same goes for subclass four, toddlers denied smooth
    and effective transitions to preschool. Those children claimed
    that the District’s policies and practices prevented them from
    entering preschool by age three without interruption in their
    special education services. This is a common allegation,
    provable by evidence showing that the District failed to provide
    smooth transitions to 30 percent of toddlers, and remediable by
    a single injunction requiring annual improvement.
    We have no need to belabor the point. These three
    subclasses are far more precise than the class this court vacated
    in 2013, whose members shared only the contention that they
    had been denied FAPEs at some point in their experiences with
    the District’s special education programs.
    Relying on 
    Wal-Mart, 564 U.S. at 352
    , in which the
    Supreme Court observed that female employees had failed to
    show common reasons for their managers’ decisions about
    promotions and pay, the District argues that even if its policies
    run afoul of IDEA, “there are many different reasons” it might
    have denied a particular child a FAPE. Appellants’ Br. 39. For
    example, the District explains that it may have deprived some
    children of special education because of “insufficient outreach”
    and others due to “insufficient staff” or “documentation
    errors.” 
    Id. Accordingly, the
    District claims, even the three
    subclasses lack “common contention[s]” whose “truth or
    falsity” can be resolved “in one stroke.” 
    Wal-Mart, 564 U.S. at 350
    .
    There is, however, a significant distinction between Wal-
    Mart and this case. As the Court pointed out in Wal-Mart, “[i]n
    resolving an individual’s Title VII claim, the crux of the
    inquiry is ‘the reason for a particular employment decision.’”
    
    Id. at 352
    (quoting Cooper v. Federal Reserve Bank of
    Richmond, 
    467 U.S. 867
    , 876 (1984) (emphasis added)). The
    18
    fact that Wal-Mart supervisors might have had different
    reasons for “literally millions of employment decisions” was
    therefore fatal to the commonality of the plaintiffs’ Title VII
    claims. 
    Id. By contrast,
    IDEA requires the District to find and
    serve all children with disabilities as a condition of its funding.
    See, e.g., 20 U.S.C. § 1412(a)(3)(A). Unlike Title VII liability,
    IDEA liability does not depend on the reason for a defendant’s
    failure and plaintiffs need not show why their rights were
    denied to establish that they were. They need only show that
    the District in fact failed to identify them, failed to provide
    them with timely eligibility determinations, or failed to ensure
    a smooth transition to preschool. Wal-Mart’s analysis of
    commonality in the Title VII context thus has limited relevance
    here.
    Citing a Seventh Circuit decision, Jamie S. v. Milwaukee
    Public Schools, 
    668 F.3d 481
    (7th Cir. 2012), the District
    argues that the parents in this case alleged only a “superficial
    violation of the same provision of law.” Appellants’ Reply Br.
    16. But that case concerned a much broader class, more like the
    original class this court rejected than the subclasses now at
    issue. As the Seventh Circuit noted, the class there not only
    sought “individualized relief,” but also “combined,” among
    other groups, “all disabled students . . . who were not identified
    as potentially eligible for services, not timely referred for
    evaluation after identification, [and] not timely evaluated after
    referral.” 
    Id. at 495,
    499. The subclasses in this case suffer from
    no such flaw and seek class-wide injunctive relief.
    The District next argues that the class violates Rule
    23(a)(3)’s typicality requirement because the parents’ claims
    “vary from child-to-child.” Appellants’ Br. 42. This argument
    should sound familiar: it is the District’s commonality
    challenge in a new guise. Indeed, the District expressly claims
    that the court “found typicality based on the same error it made
    19
    in finding commonality.” 
    Id. 41. As
    we have already explained,
    however, the district court made no such error. Specifically
    analyzing typicality, it found a “sufficient nexus” between the
    claims of the named plaintiffs and the claims of the members
    of their respective subclasses. D.L. v. District of Columbia, 
    302 F.R.D. 1
    , 14 (D.D.C. 2013). We see no abuse of discretion.
    Rule 23(a)’s final requirement—adequacy—provides that
    the named plaintiff must “fairly and adequately protect the
    interests of the class.” Amchem Products, Inc. v. Windsor, 
    521 U.S. 591
    , 625 (1997) (quoting Fed. R. Civ. P. 23(a)(4)). This
    rule “serves to uncover conflicts of interest between named
    parties and the class they seek to represent.” 
    Id. In this
    case, the
    district court determined that notwithstanding the mootness of
    their individual claims, the six named plaintiffs “displayed a
    strong commitment to resolving this case” and “respond[ed] to
    all developments in a timely and professional fashion.” 
    D.L., 302 F.R.D. at 14
    –16.
    Challenging this determination, the District argues that the
    court “disregard[ed] the presumption” that “[w]hen a plaintiff’s
    claim is moot, it makes her representation presumptively
    inadequate.” Appellants’ Br. 42. The court did no such thing.
    It acknowledged the adequacy concerns raised by the named
    plaintiffs’ age progression and explained why they nonetheless
    remained capable representatives. The Supreme Court,
    moreover, has made clear that mootness and adequacy are
    “separate issue[s]” and that plaintiffs with moot claims may
    adequately represent a class. 
    Geraghty, 445 U.S. at 407
    . With
    the benefit of firsthand exposure to the parents and their
    lawyers during the course of a then-eight-year-old case, the
    district court found that the parents will “fairly and adequately
    protect the interests of the class.” 
    D.L., 302 F.R.D. at 14
    (quoting Fed. R. Civ. P. 23(a)(4)). The District has given us no
    basis for questioning that decision, especially given that the
    20
    district court pondered and rejected the exact arguments the
    District now makes.
    Nor, contrary to the District’s argument, did the court err in
    certifying subclasses under Rule 23(b)(2). To certify a class
    under this provision, a single injunction must be able to
    “provide relief to each member of the class.” 
    Wal-Mart, 564 U.S. at 360
    . The district court’s comprehensive order does just
    that. Rule 23(b)(2) exists so that parties and courts, especially
    in civil rights cases like this, can avoid piecemeal litigation
    when common claims arise from systemic harms that demand
    injunctive relief. See 
    Geraghty, 445 U.S. at 403
    (discussing the
    purpose of Rule 23); In re District of Columbia, 
    792 F.3d 96
    ,
    102 (D.C. Cir. 2015) (“Rule 23(b)(2) was intended for civil
    rights cases.”). The Rule 23(b)(2) class action, in other words,
    was designed for exactly this sort of suit.
    IV.
    This brings us to the District’s challenges to the injunction.
    IDEA authorizes courts to grant “such relief as [they]
    determine[] is appropriate,” 20 U.S.C. § 1415(i)(2)(C)(iii),
    which “entail[s] broad discretion and implicate[s] equitable
    considerations,” Reid ex rel. Reid v. District of Columbia, 
    401 F.3d 516
    , 522 (D.C. Cir. 2005) (citation and internal quotation
    marks omitted). Moreover, “it goes without saying that federal
    courts must vigilantly enforce federal law and must not hesitate
    in awarding necessary relief.” Horne v. Flores, 
    557 U.S. 433
    ,
    450 (2009).
    A.
    The District first argues that the injunction rests on two
    mistakes of law—one concerning subclass three and the other
    subclass four. “We review the district court’s conclusions of
    21
    law de novo.” United States v. Philip Morris, 
    566 F.3d 1095
    ,
    1110 (D.C. Cir. 2009).
    Recall that subclass three covers three-to-five-year-olds
    who did not receive an eligibility determination within 120
    days of being referred for an evaluation. To remedy this injury,
    the court required the District to issue timely determinations in
    95 percent of cases and to improve its performance annually
    until it meets that benchmark. The District argues that this
    requirement is “contrary to the plain language of IDEA”
    because it “start[s] the clock” for eligibility determinations at
    the date of referral rather than the date a parent or guardian
    consents to a child’s evaluation. Appellants’ Br. 47. In support,
    the District emphasizes that IDEA section 1414 requires an
    eligibility determination “within 60 days of receiving parental
    consent for the evaluation,” but it ignores the rest of the
    sentence: “or, if the State establishes a timeframe within which
    the evaluation must be conducted, within such timeframe.” 20
    U.S.C. § 1414(a)(1)(C)(i)(I) (emphasis added). Exercising just
    that option, the District passed a law—section 38-2561.02 of
    the D.C. Code—which requires an eligibility determination
    “within 120 days from the date that the student was referred
    for an evaluation or assessment.” D.C. Code § 38-
    2561.02(a)(1) (emphasis added). District law thus starts the
    clock just when the court did, at referral rather than parental
    consent. True, the District has amended section 38-2561.02 to
    use parental consent as the trigger for the eligibility
    determination timeline. See 
    id. § 38–2561.02(a)(2)(A).
    But that
    amendment, by its terms, will not become effective until “July
    1, 2017, or upon funding, whichever occurs later.” 
    Id. To be
    clear, the District still needs parental consent to
    evaluate a child, see D.C. Code Mun. Reg. tit. 5, § 3005.2
    (requiring reasonable efforts to obtain parental consent for
    disability evaluations), and nothing in the injunction eliminates
    22
    that requirement. Indeed, the district court emphasized that “the
    District should not be blamed for an untimely determination if
    the parent does not reasonably participate in the . . . process,”
    and noted that the District could adopt a parental delay policy
    exempting cases in which parents cannot be reached or decline
    to consent. 
    D.L., 194 F. Supp. 3d at 71
    (citing 34 C.F.R.
    § 300.301(d)(1)). In this way, the injunction excuses the
    District from compliance where it is unable to meet its
    deadlines through no fault of its own.
    The District brings a separate challenge to the remedy for
    subclass four—children denied “smooth and effective”
    transitions from Part C early intervention programs to Part B
    preschool programs. In order to qualify as “smooth and
    effective,” a transition must begin “not fewer than 90 days
    before the [toddler’s] third birthday,” involve Part B and C
    personnel, and deliver “seamless” services. See 20 U.S.C.
    § 1412(a)(9); 34 C.F.R. § 303.209(a)(3)(ii), (b)-(f). For this
    subclass, the court fashioned a remedy familiar from subclass
    three: a 95 percent compliance target, with incremental
    improvement required each year. To avoid confusion, the court
    made clear that the District could report a smooth transition so
    long as children receive all “special education services” by
    their third birthdays (or slightly later, for those with weekend,
    holiday, and summer birthdays) and all “related services” by
    fourteen days thereafter (or again, later in certain cases). 
    D.L., 194 F. Supp. 3d at 101
    . “Related services” are the “support
    services required to assist a child” in benefitting from special
    education. Endrew 
    F., 137 S. Ct. at 994
    (citing 20 U.S.C.
    § 1401(26), (29)) (internal quotation marks omitted). In other
    words, the court ordered the District to provide core services
    by age three and support services two weeks later.
    The District argues that the court had no authority to order
    it to provide special education services by a child’s third
    23
    birthday—or for that matter, by any date certain. We disagree.
    IDEA expressly requires states to ensure that an IEP “has been
    developed and is being implemented” by “the third birthday”
    of all toddlers transitioning from early intervention to
    preschool. 20 U.S.C. § 1412(a)(9). Ignoring this statutory text,
    the District points to a Department of Education regulation
    requiring services to be delivered “as soon as possible” after
    development of a child’s IEP. 34 C.F.R. § 300.323(c). The
    statute, of course, is our guide, and it requires IEPs to be
    implemented by the child’s third birthday. Moreover, the
    regulation the District invokes, which concerns the provision
    of special education services to students aged three to twenty-
    one, has nothing to do with the transition to preschool for
    children already identified as disabled. And if all this were not
    enough, the regulation governing the “smooth transition”
    condition requires—in language identical to the statute—that
    an IEP “has been developed and is being implemented” by age
    three, 
    id. § 300.124(b),
    and a separate regulation obliges states
    to make a FAPE available “no later than the child’s third
    birthday,” 
    id. § 300.101(b)(1)(i).
    B.
    Next the District next makes a series of evidentiary
    arguments: that the court chose unduly harsh compliance
    targets, ignored improvements in the Child Find program, and
    relied on inaccurate statistics. Our review of such objections is
    “deferential—clear error as to any factual findings and abuse
    of discretion as to the remedy.” 
    Reid, 401 F.3d at 522
    .
    The first of these challenges concerns subclass one—three-
    to-five-year-olds with disabilities whom the District failed to
    find. The district court determined that at least 8.5 percent of
    preschoolers should be enrolled in special education and
    related services, but that just over 6 percent were. The court
    based the 8.5 percent benchmark on expert testimony “related
    24
    to risk factors in the District, comparisons to other
    jurisdictions, and incidence of developmental delays
    nationwide.” 
    D.L., 194 F. Supp. 3d at 49
    . Specifically, the court
    found that although “nationally, about six percent of three-to-
    five-year-olds are identified with developmental delays,” the
    number is likely higher in the District because of its unique risk
    factors, including unusually high rates of poverty, child
    homelessness, single-parent and non-English-speaking
    households, incidence of low birth weight and HIV/AIDS
    infection, and participation in supplemental assistance
    programs. 
    Id. at 50.
    By way of comparison, the court noted that
    “other urban jurisdictions” with similar risk profiles such as
    Atlanta and Detroit identified “between 10 and 12 percent” of
    children as eligible for special education. 
    Id. at 49.
    “All of this
    [evidence],” the court reasoned, “supports the conclusion that
    the District must show that it is serving 8.5 percent of its
    population,” i.e., the figure at the low end of its expected
    identification rates. 
    Id. at 51.
    The court ordered the District to
    improve its performance half a percent each year until it
    reaches 8.5 percent. 
    Id. The District
    believes that this remedy suffers from three
    flaws: (1) the 8.5 percent benchmark ignores “protective
    factors” such as the existence of non-profits, which “buffer
    children against the negative effects” of the risk factors in the
    District and therefore reduce the number of children likely to
    need special education services; (2) enrollment data, which the
    injunction uses to measure the District’s success at finding
    children, do not approximate Child Find compliance because
    not all children identified as potentially needing IDEA services
    ultimately enroll in special education programs; and (3) the
    injunction improperly defines “enrollment” as receipt of all—
    rather than only some—services promised in a child’s IEP.
    Appellants’ Br. 45.
    25
    The district court considered and rejected each of these
    arguments. It took seriously the existence of protective factors
    that might drive down special education rates, acknowledging
    that “Washington D.C.’s network of non-profits likely does
    indeed help to alleviate some of the negative developmental
    effects of risk factors like high homelessness and poverty
    rates.” 
    D.L., 194 F. Supp. 3d at 52
    . Even so, the court
    explained, the impact of non-profits and other city services was
    “baked into” the numbers the parents’ expert had used because,
    “to the extent that the non-profits do decrease rates of poverty
    and homelessness, etc.,” that decrease was already reflected in
    the District’s rates of homelessness, poverty, and other risk
    factors. 
    Id. As a
    result, the court reasoned, the data used to
    design the remedy “incorporate[d] the positive effects” of
    D.C.’s network of non-profits. 
    Id. at 53.
    As to enrollment rates, the court relied on the fact that the
    District itself treats enrollment as a proxy for identification
    when tracking and reporting its IDEA compliance. Adopting
    the District’s own methods hardly amounts to an abuse of
    discretion; quite to the contrary, it makes perfect sense. Nor, in
    our view, was it unreasonable for the court to define
    “enrollment” as provision of all services outlined in a child’s
    IEP. After all, IDEA obliges states not only to find children
    with disabilities, but also to give them services. See 20 U.S.C.
    § 1412(a)(1)(A) (requiring a FAPE to be made “available to all
    children with disabilities”); (a)(2) (setting a goal of “full
    educational opportunity”); (a)(3) (requiring states to develop
    and implement effective Child Find policies). As the district
    court put it, “the entire point of the Child Find requirement is
    to provide services to children with disabilities,” a duty the
    District is violating by offering children only some of the
    services to which they are entitled. 
    D.L., 194 F. Supp. 3d at 91
    .
    26
    The District also challenges the injunction’s
    “programmatic” requirements, which aim to improve data
    collection and outreach efforts—for instance, by ordering
    school officials to “publish printed materials targeted to parents
    and guardians” about available services and to “maintain and
    regularly update a list of primary referral sources.” 
    Id. at 101.
    The District insists that these requirements are tailored to
    harms they addressed in response to the district court’s 2011
    injunction. Perhaps so, but following a three-day trial with new
    evidence, the district court found a slew of continuing
    deficiencies in the District’s Child Find program, including
    “material inconsistences in the District’s documents and
    practice,” evidence that the District had yet to amend policies
    the court ordered it to change five years earlier, and a two-year
    decline in the District’s identification rates after the first
    injunction was vacated in 2013. 
    Id. at 99.
    Given this evidence,
    we see no abuse of discretion in the district court’s decision to
    again impose programmatic remedies.
    Next, the District mounts several challenges to the court’s
    reliance on statistical evidence. Several of these arguments are,
    in essence, objections to the liability finding. For example, the
    District contends that “the generalized and procedural nature of
    the findings does not support the conclusion that children were
    denied a FAPE.” Appellants’ Br. 57. Other critiques focus on
    the statistics the court used, which the District asserts are
    inadequate to support “systemic relief.” 
    Id. 54–55. In
    both
    formulations, the District’s challenge fails.
    Not only does the District cite nothing for the proposition
    that courts may not rely on statistical evidence, but it makes
    perfect sense to use such evidence where, as here, the violations
    amount to a systemic failure to find children. How else could
    the court have demonstrated a failure to identify children with
    disabilities except with numerical evidence that the District is
    27
    in fact failing to find and serve specified numbers of such
    children? And how else could the court have remedied that
    violation except by setting numerical goals to bring the District
    into compliance with its IDEA obligations?
    Moreover, the District’s violation was clearly substantive.
    Although it is true that “this court has at times required parents
    to demonstrate that the student’s education was affected by any
    procedural violations the school district might have
    committed,” we have done so “only where the violation was
    not obviously substantive.” Leggett v. District of Columbia,
    
    793 F.3d 59
    , 67 (D.C. Cir. 2015) (quoting Lesesne ex rel. B.F.
    v. District of Columbia, 
    447 F.3d 828
    , 834 (D.C. Cir. 2006))
    (alterations and internal quotation marks omitted). The District
    asserts that its failure to locate disabled children is a
    “procedural” rather than substantive harm. Appellants’ Br. 57.
    But twice in recent months the Supreme Court has confirmed
    that access to a FAPE is a “substantive right.” Endrew 
    F., 137 S. Ct. at 993
    ; see also Fry v. Napoleon Community Schools,
    
    137 S. Ct. 743
    , 749 (2017) (“An eligible child . . . acquires a
    substantive right to [a FAPE] once the state accepts the IDEA’s
    financial assistance.” (citation and internal quotation marks
    omitted)). Disabled children are quite obviously denied a
    FAPE when the District fails to find them at all.
    C.
    Finally, we reach the District’s two deepest objections to
    the injunction.
    First, the District contends that the court “should have erred
    on the side of leaving control of the school system to state and
    local authorities.” Appellants’ Br. 46. This argument
    completely ignores the court’s restrained approach. Rather than
    “assum[ing] control” of the District, 
    id. 55, the
    court opted for
    benchmarks and gradual deadlines, leaving the District with
    28
    flexibility in how to achieve compliance and time to do so. As
    the parents explain, the injunction “require[s] [the District] to
    do nothing more than what is required under IDEA,” and the
    “programmatic requirements are limited to the basic elements
    of an adequate Child Find program.” Appellees’ Br. 56. The
    injunction balances the need for relief with deference to school
    administrators, precisely what the court is supposed to do. See
    Freeman v. Pitts, 
    503 U.S. 467
    , 489 (1992) (“[T]he court’s end
    purpose must be to remedy the violation and, in addition, to
    restore state and local authorities to the control of a school
    system . . . .”).
    Second, the District argues that the court “strayed
    impermissibly from the focus on individual relief that is [at] the
    heart” of IDEA. Appellants’ Br. 56 (citing 20 U.S.C. § 1415).
    As the District sees it, the “proper role” of IDEA’s judicial
    enforcement provision “is individualized rather than systemic
    relief.” 
    Id. 55. In
    other words, the District believes that IDEA
    precludes comprehensive injunctions. This is the last iteration
    of an argument the District has pressed throughout this
    litigation: IDEA claims ought to be handled one-by-one, not as
    class actions cured through structural remedies.
    It is true that courts may remedy certain IDEA disputes,
    such as a parent’s claim that a child’s IEP is defective, only
    through “individualized” relief. See Jamie 
    S., 668 F.3d at 495
    .
    But to argue, as does the District, that this limitation also
    applies to violations of the Child Find requirement ignores that,
    unlike a parent worried about her child’s IEP, the parents in
    this case challenge systemic defects in the District’s
    identification and eligibility determination policies, which
    harm all unidentified preschoolers and can only be remedied
    by a comprehensive injunction designed to bring the District
    into compliance with IDEA. 
    See supra
    Part III.
    29
    Even more important, the District’s argument would
    eviscerate the very purpose of IDEA. When Congress enacted
    the legislation that became IDEA, it was responding to the
    “pervasive and tragic” failure to serve all children with
    disabilities, Endrew 
    F., 137 S. Ct. at 999
    , which is why it
    imposed on states accepting IDEA funding an obligation to
    “identif[y], locate[], and evaluate[]” all preschoolers with
    disabilities, 20 U.S.C. § 1412(a)(3)(A). Yet the District, which
    has enthusiastically accepted millions of dollars in IDEA
    funding, now proposes to shift that burden back to the parents.
    In the District’s view, it would be up to each and every parent,
    many of whom are poor, homeless, and perhaps disabled
    themselves, to somehow determine whether their children are
    eligible for special education services and then to retain
    counsel to sue the District to obtain the services to which they
    are entitled. Given the purpose of IDEA, we cannot imagine a
    more preposterous argument. And given the district court’s
    finding that the District has failed, year after year, to comply
    with IDEA’s Child Find requirement, we have no doubt that
    the statute’s remedial provision—authorizing courts to “grant
    such relief as [they] determine[] is appropriate,” 20 U.S.C.
    § 1415(i)(2)(C)(iii), and implicating “broad discretion” and
    “equitable considerations,” 
    Reid, 401 F.3d at 522
    —vests the
    court with all the authority it needs to remedy those violations
    through injunctive relief. For decades, courts across the country
    have done just that, ordering or approving structural relief
    when IDEA violations required it. See, e.g., Vaughn G. v.
    Amprey, No. 96-1507, 
    1997 WL 378068
    , at *1 (4th Cir. 1997)
    (recounting the “decade long struggle” between students and
    the Baltimore City Public School (BCPS) system, which led to
    a series of consent decrees restructuring BCPS’s special
    education programs); D.D. v. New York City Board of
    Education, No. 03-cv-2489, ECF No. 250 (E.D.N.Y. Apr. 25,
    2007) (approving a decree requiring the New York State
    Department of Education to amend its policies, coordinate with
    30
    other agencies, develop and implement training programs,
    collect data, and propose new legislation to New York State
    Assembly); Blackman v. District of Columbia, No. 97-cv-1629,
    
    2006 WL 2456413
    (D.D.C. Aug. 24, 2006) (approving an
    expansive consent decree to remedy systemic IDEA violations
    in the District of Columbia); James O. v. Marston, No. 86-cv-
    0006, ECF Nos. 191–200 (D.N.H. Aug. 23, 1991) (requiring
    the New Hampshire Department of Education to overhaul its
    policies and procedures concerning children with disabilities in
    detention centers and other state facilities).
    V.
    Having considered each of the District’s challenges, we are
    convinced that the district court made no mistake. So long as
    the District of Columbia accepts federal funding, it is bound to
    its pledge to find, evaluate, and serve all children with
    disabilities. The district court neither erred nor abused its
    discretion in holding the District to its word. We affirm in all
    respects.
    So Ordered.