Illinois Special Education Timelines Every Parent Must Know

Deadlines in Illinois special education aren't suggestions. They're statutory obligations codified in 23 Illinois Administrative Code Part 226 and federal IDEA. When the district misses them, that's not bureaucratic lateness — it's a compliance violation you can escalate to ISBE.

Understanding these timelines gives you a concrete, legally enforceable calendar. Here are the ones that matter most.

Initial Evaluation: 60 School Days from Written Consent

This is one of Illinois's most frequently violated timelines — and one of the most documented. Once you sign the consent form authorizing the district to evaluate your child for special education eligibility, the clock starts. Under 23 IL Admin Code §226.110 and §226.130, Illinois requires the district to complete the evaluation within 60 school days of receiving your written consent.

Note that this is 60 school days, not calendar days. The district cannot count weekends, holidays, or summer break. But they can only use "school days" as a genuine measure — and if they're running long, they must notify you.

In the 2019-2020 school year alone, Chicago Public Schools failed to complete more than 10,000 evaluations and annual reviews on time. The violation is common. If your evaluation is running past the deadline, send a written notice to the special education director citing 23 IL Admin Code §226.110 and request a written update on when the evaluation will be completed.

If the district used participation in a Response to Intervention (RtI) or Multi-Tiered System of Support (MTSS) process as the reason for delay, that is also a violation. Illinois law explicitly prohibits using RtI to delay or deny a special education evaluation request.

Determining Whether to Evaluate: 14 School Days

Before the 60-school-day evaluation clock starts, the district must first decide whether an evaluation is warranted. Under Illinois law, the district must make that determination within 14 school days of receiving your evaluation request — and provide you with either consent forms to evaluate or a Prior Written Notice explaining why they're refusing.

If you don't receive a response within 14 school days, follow up in writing and document the lapse. This is the first domino: delays here extend everything downstream.

Annual IEP Review: Once Per Year, Within 12 Months

Once your child has an IEP, it must be reviewed at least once per school year. The annual review cannot be skipped or indefinitely postponed. Under IDEA and Part 226, the district must hold the IEP meeting and complete the IEP review before the anniversary date of the last IEP.

"Before the anniversary date" is the key phrase. If your child's IEP was signed on October 15, 2024, the next annual review must be completed by October 14, 2025. A district that schedules the review for October 20 is out of compliance.

If your child's annual review is missed or significantly delayed, document it in writing and put the district on notice that you are aware of the violation. In CPS, missed annual reviews have historically triggered ISBE corrective action plans, so ISBE takes these seriously.

Triennial Re-Evaluation: Every Three Years

At minimum once every three years, the district must conduct a comprehensive re-evaluation of your child to determine whether they still need special education services and whether their current classification and IEP remain appropriate. This is called the triennial, or three-year re-evaluation.

You can consent or decline some or all re-evaluation components. However, the district must offer the re-evaluation and get your response within three years of the last comprehensive evaluation.

The re-evaluation can be a meaningful opportunity: if your child's needs have significantly changed, the triennial is the moment to push for a more thorough evaluation that captures current skills and limitations. Request that the re-evaluation include all relevant domains (cognitive, academic, speech/language, occupational therapy, social-emotional) rather than only the areas the district proposes to re-assess.

You also have the right to request an IEE (Independent Educational Evaluation) at public expense if you disagree with the district's triennial evaluation — the same right applies at any evaluation, not only the initial one.

Responding to a Due Process Complaint: 15 Days for Resolution Meeting

If you file a due process complaint in Illinois, the district must convene a Resolution Meeting within 15 calendar days of receiving the complaint. The purpose of this meeting is to give the district an opportunity to resolve the dispute before it reaches a formal hearing. Both parties can agree to waive the resolution meeting and proceed directly to mediation or a hearing.

Transition Planning: Must Begin at Age 14.5

This is one of the most important Illinois-specific differences from federal law. Federal IDEA requires transition planning to begin at age 16. Illinois requires it to start when the student is 14.5 years old.

This means if your child is approaching 14.5 and their IEP does not include a Transition Plan — with measurable postsecondary goals in education, training, employment, and independent living — the district is out of compliance with 23 IL Admin Code §226.230.

Don't wait for the school to raise this. At the IEP meeting closest to your child's 14.5 birthday, put it on the agenda yourself.

Using Timeline Violations as Leverage

Timeline violations don't automatically result in a remedy — but they do create leverage. An ISBE State Complaint for a documented timeline violation is free to file, carries a 60-calendar-day investigation window, and can result in mandatory corrective action.

More practically: a letter to the district citing the specific timeline violation by code section, and requesting a written explanation, often produces results faster than any formal complaint process. Districts know that documented violations create exposure.

The Illinois IEP & 504 Advocacy Playbook at /us/illinois/advocacy/ includes a timeline violation letter template and an ISBE complaint template that you can adapt to your specific situation. If the district has missed a deadline, the next step is getting it in writing — tonight.

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