Illinois IEP Evaluation Timeline, Dispute Routes and Parent Resources (2026)
- Evaluation window
- 60 school days
- The clock starts at
- Parental consent
- State complaint deadline
- One year
- Due process deadline
- Two years
How long does a school in Illinois have to complete an IEP evaluation?
In Illinois the evaluation clock runs in school days. Once a parent signs written consent for the assessments a district has 60 school days to complete the evaluation, decide eligibility and hold the IEP meeting, so all three land inside one window rather than in separate stages. A shorter step sits in front of it, because a district decides within 14 school days of a written request whether an evaluation is warranted before it asks for that consent. If fewer than 60 school days are left in the year when consent is signed, the eligibility decision and the IEP meeting are completed before the first day of the following school year. A family that disagrees has the three IDEA routes plus a fourth Illinois option: a written state complaint to the Illinois State Board of Education within one year, free state-sponsored mediation, a due process request filed with the district superintendent within two years, or free state-sponsored IEP facilitation while the IEP is still being built.
The evaluation timeline in Illinois
| Initial evaluation window | 60 school days |
|---|---|
| The clock starts at | parental consent to evaluate |
| Against the federal rule | A timeframe Illinois sets for itself |
IDEA sets a default of 60 calendar days from parental consent for an initial evaluation (34 CFR 300.301(c)(1)). It also lets a state set its own timeframe instead, which is what Illinois has done, so the window above is the one that applies here.
Illinois measures its 60 day window in school days rather than calendar days, which stretches the real-world window well beyond the federal 60 calendar days. If fewer than 60 school days remain in the year after consent, the eligibility meeting must happen before the next school year starts.
Source: 23 Ill. Admin. Code Section 226.110(d) www.law.cornell.edu/regulations/illinois/Ill-Admin-Code-tit-23-SS-226.110
The same window sits beside all fifty-one jurisdictions on the evaluation timelines by state table, which explains where the federal deadline comes from. To pull one state's window on its own, the evaluation deadline checker returns that single result.
Reevaluation and IEP review cadence in Illinois
Illinois keeps the federal cadence for reevaluations: at least once every three years unless the family and the district agree that one is unnecessary, no more than once a year unless both agree otherwise, with the IEP reviewed at least once a year. The Illinois rule on reevaluations does not set a completion clock in its own words. It is one sentence saying reevaluation procedures conform to the federal reevaluation rules as well as to Section 226.110 of the same part, which is the section carrying the 14 school day step where the district works out what assessments are needed plus the 60 school day window measured from written parental consent. That section is written for initial evaluations, so how far its school day counts reach into a reevaluation is a reading of the cross-reference rather than a figure the rule states. ISBE's own parent-facing publications restate the three year cadence without repeating a 60 school day figure for reevaluations, so a family tracking a reevaluation date can check the current reading with the district or with the Special Education Department.
Source: 23 Ill. Admin. Code Section 226.120, one sentence adopting the federal reevaluation rules as well as Section 226.110 of the same part without restating either; the cadence itself at 34 CFR 300.303(b)(1) and (b)(2) plus the annual IEP review at 34 CFR 300.324(b)(1)(i) www.law.cornell.edu/regulations/illinois/Ill-Admin-Code-tit-23-SS-226.120
If you disagree in Illinois
IDEA gives families in every state the same three routes when a disagreement with the school does not resolve at the team table. What changes at the state line is who administers each route, how long you have to file and the local detail below.
The state complaint
Handled by Special Education Department, Illinois State Board of Education. Time limit to file: One year from the date of the alleged violation.
A state complaint in Illinois is a signed written complaint sent to the Illinois State Board of Education in Springfield, with the same complaint going to the school district or other public agency serving the child at the same time. ISBE recommends its own request form without requiring it. An ISBE complaint investigator reviews the allegations rather than bringing the parties together, requires the public entity to file a written response with any corrective action documentation by a date ISBE sets that cannot run past 45 days, then issues a written decision carrying findings of fact, conclusions and any corrective action orders within 60 calendar days. That 60 day count extends only where exceptional circumstances exist or where the family and the district agree to try mediation or another way of resolving it instead. Where a complaint raises an issue that is also in a due process hearing, ISBE holds that part in abeyance until the hearing finishes.
Source: 23 Ill. Admin. Code Section 226.570, at (b) for the one year limit, (c) for the 60 day decision, (c)(3) for the 45 day cap on the district's response, (d) for the two grounds to extend and (e) for the abeyance; the simultaneous copy to the district at 34 CFR 300.153(d), which Section 226.570 adopts in its opening sentence; 105 ILCS 5/14-8.02e, the School Code section directing ISBE to adopt these procedures www.law.cornell.edu/regulations/illinois/Ill-Admin-Code-tit-23-SS-226.570
Mediation
Illinois runs mediation itself. The Illinois State Board of Education administers and supervises the service, supplies a trained neutral mediator at no cost to either side and takes the request directly through its mediation request form or an online form. Both the family and the district have to agree to take part, no filing deadline applies and mediation can run even after a written state complaint or a due process request has been filed. An agreement reached in mediation is written down, signed by someone who can bind the district and enforceable in court. Since 15 August 2025 the School Code has also set out when such an agreement may include a forward-looking waiver of a legal right or claim, which it allows only where the right waived belongs to that student, relates to the claims being settled and lasts no longer than the agreement itself. Two Illinois provisions attach to the stay put placement. Asking for mediation within 10 school days of the notice of a proposed placement change makes the last placement both sides agreed on the stay put placement. Where mediation ends without resolving things, or where a party declines mediation, 10 days remain to file a due process request to keep stay put running.
Source: 23 Ill. Admin. Code Section 226.560, at (a) adopting the federal mediation requirements at 34 CFR 300.506 and at (b) and (c) for the two stay put provisions; the federal requirements themselves at 34 CFR 300.506(b)(1)(i) for a voluntary process, (b)(4) for the state bearing the cost and (b)(6)(ii) with (b)(7) for a signed agreement enforceable in court; 105 ILCS 5/14-8.02a(j) for the same stay put provisions in statute and (g-32) for the limits on a prospective waiver, added by Public Act 104-211 effective 15 August 2025; Illinois State Board of Education state-sponsored mediation page for the request routes www.law.cornell.edu/regulations/illinois/Ill-Admin-Code-tit-23-SS-226.560
A due process hearing
Time limit to file: Two years from the date the parent knew or should have known about the events the request is about.
Illinois puts the first step at the district office. A written request for a due process hearing goes to the superintendent of the district where the child lives rather than to the state. That superintendent forwards it to the Illinois State Board of Education within five days under the School Code and the state rule, a count ISBE's own parent notice writes as five school days. ISBE then appoints an impartial hearing officer within three days through a rotating appointment system. Each side may substitute that hearing officer once as a matter of right by writing to the ISBE Due Process Coordinator within five days of the appointment notice. ISBE picks the replacement at random within three days. A resolution meeting follows within 15 days unless both sides waive it or take mediation instead, the resolution period runs 30 days, then the 45 day decision timeline starts. ISBE describes a regular request that runs a full resolution session as a 75 calendar day process. The hearing officer issues a written decision with findings of fact and conclusions of law within 10 calendar days of the hearing closing, counting neither weekends nor State holidays. Illinois runs one administrative level, so that decision is the last administrative word. Either party can then bring a civil action in a court of competent jurisdiction within 120 days of the decision being mailed. ISBE reviews the decision afterwards and monitors whether the parties follow it.
Source: Illinois State Board of Education Notice of Procedural Safeguards, July 2026 edition, form 34-57J, which is the document at this link and which states the two year limit, the filing route to the superintendent, the one substitution and the 15 day resolution meeting with the 30 day resolution period, the 45 day decision and the 120 day civil action; the figures it does not restate come from 105 ILCS 5/14-8.02a, at (f) for the two year limit and the filing route, (f-5) for the appointment within three days on a rotating system and the one substitution as a matter of right, (g-20) for the resolution meeting and the 30 day period, (h) for the written decision within 10 calendar days excluding weekends and State holidays and (i) for the 120 day civil action; the state rules at 23 Ill. Admin. Code Sections 226.615 for the superintendent forwarding within five days, 226.635 for the substitution request to the Due Process Coordinator, 226.670 for the decision timelines and 226.675 for ISBE's review of the decision www.isbe.net/SPEDReqNotConForms/nc_proc_sfgrds_34-57j.pdf
Get the free Evaluation-Request Letter Template (PDF)
A ready-to-adapt letter to request an evaluation in writing, with the dates that matter and the language to use.
Instant download, plus a note if the guidance on this topic changes. Unsubscribe anytime.
Who to contact in Illinois
- The state special education office. Special Education Department, Illinois State Board of Education. This is the office that answers questions about Illinois rules and receives a state complaint.
- Your rights in writing. Notice of Procedural Safeguards for Parents/Guardians of Students with Disabilities, July 2026 edition, published by the Illinois State Board of Education as form 34-57J with translations posted alongside the English edition. Every district hands parents this notice at least once a year (34 CFR 300.504). It is the plain summary of what you can ask for at each step.
- Parent training and information center. Family Matters Parent Training and Information Center. A parent center is free and federally funded under IDEA. Staff there talk families through the process in their own state at no cost.
- The state rules themselves. 23 Ill. Admin. Code part 226 (Special Education) as published by the Illinois State Board of Education, last amended effective 5 May 2025, whose authority line implements article 14 of the School Code [105 ILCS 5]; the statute itself at 105 ILCS 5, article 14 (Children With Disabilities). Article 14 is Illinois's own special education statute covering who counts as a child with a disability, what school districts and the State Board of Education have to do, evaluations and IEPs, impartial due process hearings, the state complaint procedures and funding, with the working detail carried in part 226 of the state education rules.
Child Find in Illinois
Illinois writes an affirmative screening duty into its child find rule. Each district actively seeks out and identifies children from birth through age 21 who may be eligible. That duty includes annual and ongoing screenings of children under the age of five plus ongoing coordination with early intervention so a child leaving birth to three services has an IFSP or IEP in place by the third birthday. Illinois then adds a summer birthday option. A child whose birthday falls between May 1 and August 31 may keep receiving early intervention services past the third birthday until the school year that follows. ISBE's procedural safeguards notice adds that a family taking that extended option can reverse the decision later so the child starts early childhood education services before the school year begins.
Source: 23 Ill. Admin. Code Section 226.100(a), including (a)(1) and (a)(3); Illinois State Board of Education Notice of Procedural Safeguards, July 2026 edition www.law.cornell.edu/regulations/illinois/Ill-Admin-Code-tit-23-SS-226.100
