IEP Timelines and Deadlines in Illinois

Understanding the IEP timeline deadlines in Illinois is one of the most powerful things you can do as a parent. When you know the rules, you can make sure the process stays on track — and your child gets the support they need without unnecessary delays. This guide walks you through every key deadline, plain and simple.

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Why Deadlines Matter in Special Education

Timelines in special education are not just bureaucratic checkboxes. They are legally protected milestones that ensure your child is evaluated promptly, placed appropriately, and reviewed regularly. Missing a deadline can mean weeks or months of delayed services — time your child cannot get back. Illinois follows federal requirements under the Individuals with Disabilities Education Act (IDEA) and adds its own state-specific rules on top.

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Step 1 — Requesting an Initial Evaluation

Everything starts with a referral. Either you (the parent) or a school staff member can request that your child be evaluated for special education eligibility.

• Put your request in writing. A written, dated request starts the clock and creates a clear record.
• Your right to request an evaluation is protected under federal law (20 U.S.C. § 1414(a)(1); 34 C.F.R. § 300.301).
• Once the school receives your request, it must respond with Prior Written Notice (PWN) — a written explanation of whether it agrees to evaluate your child, and why (20 U.S.C. § 1415(b)(3), (c)(1); 34 C.F.R. § 300.503).
• The school must also send you a consent form. The evaluation clock does not start until you sign and return that consent.

Plain-language tip: PWN (Prior Written Notice) is simply a formal letter the school must send you any time it proposes — or refuses — to take an action related to your child's education. It must explain the reasons in understandable language.

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Step 2 — The 60-School-Day Evaluation Deadline

This is the most important timeline to know in Illinois.

Once you give written consent for an initial evaluation, the school district has 60 school days to complete the full evaluation and hold an eligibility meeting (23 Ill. Admin. Code § 226.110(d)).

Key things to understand about this window:

• "School days" — not calendar days. Summers, holidays, and days school is not in session do not count toward the 60 days. If you sign consent in April, the clock may pause over summer break.
• The evaluation must be comprehensive and individualized — covering all areas of suspected disability, not just one test.
• At the end of the evaluation, the team meets to determine whether your child is eligible for special education under one or more of the 13 disability categories defined by IDEA.
• If the school refuses to evaluate your child, you have the right to receive PWN explaining why, and you can seek an Independent Educational Evaluation (IEE) at public expense if you disagree with the district's evaluation.

Practical tip: Mark your calendar the day you sign consent. Count forward 60 school days and write that date down. It is your benchmark.

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Step 3 — Developing the IEP After Eligibility

Once your child is found eligible, the team must develop an Individualized Education Program (IEP) — the written plan that details your child's goals, services, and placement.

• The IEP must be in place before services begin. There is no grace period for starting services after a child is found eligible.
• Your child is entitled to a Free Appropriate Public Education (FAPE) — meaning specially designed instruction and related services provided at no cost to your family, tailored to your child's unique needs (20 U.S.C. § 1401(9); 34 C.F.R. § 300.17).
• The IEP meeting should be scheduled promptly. While Illinois does not set a separate "days-after-eligibility" deadline distinct from the 60-school-day window, best practice — and federal expectation — is that the eligibility meeting and IEP development happen without undue delay.

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Step 4 — The Annual IEP Review

An IEP is not a one-time document. Illinois and federal law require the team to review and update your child's IEP at least once every 12 months.

• The review meeting must happen before the anniversary date of the current IEP — not on it, not after it.
• You can request an IEP meeting at any time during the year if you believe your child's needs have changed. You do not have to wait for the annual review.
• The school must provide you reasonable advance notice of the meeting date and time so you can attend.

Empowering reminder: You are an equal member of the IEP team. Your observations and concerns belong in the meeting and in the document.

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Step 5 — The Three-Year Reevaluation (Triennial)

At least every three years, the school must conduct a reevaluation to determine whether your child still qualifies for special education and whether their needs have changed. This is sometimes called the "triennial" or "three-year re-eval."

• The same 60-school-day window (23 Ill. Admin. Code § 226.110(d)) applies once consent is obtained.
• You can request a reevaluation sooner if you believe your child's needs have significantly changed — you do not have to wait three years.
• The school may not conduct a reevaluation more than once per year unless you and the school agree otherwise.

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A Quick-Reference Timeline Summary

Milestone	Deadline
School responds to evaluation request with PWN	Promptly; no specific day count, but unreasonable delay is not permitted
Parent signs consent → Evaluation completed + eligibility meeting held	60 school days (23 Ill. Admin. Code § 226.110(d))
IEP developed and services begin	Before services start; no separate post-eligibility countdown beyond the 60-day window
Annual IEP review	Every 12 months (before anniversary date)
Reevaluation (triennial)	At least every 3 years
Parent-requested IEP meeting	School must respond within a reasonable time

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What to Do If a Deadline Is Missed

First, document everything. Keep copies of every letter, email, and signed form with dates.

• Contact the special education coordinator at your child's school in writing, referencing the deadline and the regulation.
• Reach out to your district's Director of Special Education if the school-level response is unsatisfactory.
• Contact the Illinois State Board of Education (ISBE) to file a state complaint if timelines are not being honored. ISBE has authority to investigate and order corrective action.
• For complex situations — especially if services have been significantly delayed or you are considering a due process hearing — consult a qualified special education attorney or advocate who knows Illinois law. This guide provides educational information, not legal advice.

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Tips for Staying on Top of IEP Deadlines

• Create a simple calendar with every deadline dated from the day you sign consent.
• Communicate in writing (email is fine) so there is always a time-stamped record.
• Ask for PWN any time the school proposes or refuses a change — it is your right.
• Join a parent group — Illinois has several advocacy networks where experienced parents share practical knowledge.
• Remember: staying informed and organized is not "adversarial." It is exactly what good collaboration looks like.