What Is an IEP Reevaluation and When Should You Request One?

A reevaluation is a formal reassessment of your child's disability, current educational needs, and eligibility for special education services. It is the mechanism IDEA uses to make sure IEPs keep pace with how a child is changing — because the evaluation that established eligibility in second grade may no longer accurately reflect a child entering middle school.

Most parents know reevaluations happen. Few know they can request one at any time, or understand when doing so is strategically important.

What the Law Requires

The Three-Year Rule (Triennial Reevaluation)

Under IDEA, schools must reevaluate a student with a disability at least once every three years. This is called the triennial reevaluation. The purpose is to determine:

Whether the student still has a disability
What the student's present levels of performance are
Whether the student continues to need special education and related services
Whether any additions or modifications to services are needed

The triennial reevaluation does not automatically require new testing. The IEP team first reviews existing data — prior evaluation results, current IEP goals and progress, teacher observations, and parent input — and determines whether new testing is needed or whether the existing data is sufficient to answer those questions.

When Reevaluations Cannot Happen Without Consent

The school cannot reevaluate your child more than once per year without your consent, unless there is exceptional reason. You also have the right to refuse a reevaluation your child's school proposes — though refusing may affect eligibility decisions.

Parent-Requested Reevaluations

Parents have the right to request a reevaluation at any time by submitting a written request to the school. The school must either conduct the reevaluation or provide written notice (Prior Written Notice) explaining why they are refusing. If they refuse, you can challenge that refusal through a state complaint.

What a Reevaluation Includes

A reevaluation begins with an existing data review. The IEP team — which includes you as a parent — reviews:

The current IEP and all prior evaluation reports
Current classroom assessments and progress data
Teacher and related service provider observations
Any information you provide as a parent

After reviewing existing data, the team determines whether additional assessments are needed. If existing data is sufficient to make all required determinations, additional testing may not be necessary. If there are unanswered questions — a new area of concern, a suspected additional disability, significant changes in functioning — new assessments are conducted.

You have the right to participate in the existing data review. Request to be part of that meeting rather than having the team make the determination without you.

If the team proposes additional testing, you must provide informed written consent before any new assessments begin. The assessments themselves must be:

Conducted by qualified evaluators
Administered in the child's native language or mode of communication
Not discriminatory on a racial or cultural basis
Comprehensive — addressing all areas of suspected disability

When You Should Request a Reevaluation Early

You do not have to wait for the three-year cycle. Request a reevaluation when:

Your Child Has Changed Significantly

Growth, maturation, new environments, and time all change children. If your child's current IEP goals feel mismatched to who they are now — either because they have made significant progress or because they have new challenges — a reevaluation can establish a current baseline.

Your Child Received a New Diagnosis Outside of School

If your child has been diagnosed by a private psychologist, neurologist, or psychiatrist with a condition not previously identified — ADHD, autism, dyslexia, TBI, anxiety disorder, processing disorder — a reevaluation may be needed to determine whether that diagnosis affects eligibility or requires a change in services.

Private diagnoses are not automatically incorporated into the IEP. The school must conduct its own evaluation (or review existing data) to make its own eligibility determination. Requesting a reevaluation is how you start that process.

Your Child Is Not Making Progress

If IEP progress reports show your child is not meeting goals, stagnating, or regressing, the issue may be the services themselves — but it may also be that the underlying evaluation data no longer accurately captures what is getting in the way of learning. A reevaluation can reveal new processing profiles, co-occurring conditions, or needs that weren't identified previously.

Services Feel Wrong for Where Your Child Is

If your child seems significantly above or below the assumptions built into their current IEP, the eligibility data may be outdated. This is especially common when a student's last evaluation was three or more years ago and their profile has shifted.

Your Child Is Approaching Transition Age

Before transition planning begins in earnest (typically age 14–16), a comprehensive reevaluation helps clarify your child's current cognitive, academic, and adaptive functioning — providing a foundation for realistic post-secondary goals and transition services. Requesting a reevaluation at age 14 or 15 ensures the transition IEP is built on current data, not a years-old assessment.

You Disagree With How the School Views Your Child's Needs

If the IEP team consistently underestimates what your child needs and you believe the evaluation data is not capturing the full picture, a reevaluation — or an Independent Educational Evaluation (IEE) — can provide new data to support your position.

How to Request a Reevaluation

Submit a written request to the special education director or your child's case manager. Keep it brief and factual:

"I am writing to formally request a reevaluation of [child's name] under IDEA. [One to two sentences describing the reason — new information, lack of progress, new diagnosis, approaching transition age, etc.] Please provide written confirmation of receipt and the proposed timeline for completing the evaluation."

Send it via email so you have a timestamped record. The school has 60 calendar days (in most states) to complete the reevaluation from the date of your consent to evaluate.

What Happens After the Reevaluation

Once the reevaluation is complete, the IEP team meets to review the results. Possible outcomes:

Continued eligibility, no changes needed — existing services are appropriate and will continue
Continued eligibility, services need revision — IEP is updated to reflect current needs
New eligibility area identified — additional disability category added; IEP expanded
Eligibility no longer met — the team determines your child no longer qualifies for special education

If the team determines your child is no longer eligible, you have the right to request an IEE if you disagree with the findings, and to challenge the decision through mediation or due process. The school must continue services during the dispute process if you file for due process in a timely manner.

Independent Educational Evaluation vs. Reevaluation

These are different things that parents sometimes confuse.

Reevaluation — conducted by the school district. You request it when you want the school to assess your child's current needs, potentially leading to IEP changes.

Independent Educational Evaluation (IEE) — conducted by an outside evaluator chosen by you, at the school's expense, when you disagree with the school's evaluation findings. An IEE does not replace a reevaluation — it provides independent data for the IEP team to consider.

You can request an IEE at any point when you disagree with an evaluation the school has completed. The school must either fund the IEE or file for due process to defend their evaluation.

Frequently Asked Questions

Can I refuse the school's triennial reevaluation?

Yes. You can refuse consent for a triennial reevaluation. However, if the school needs to reevaluate to determine continued eligibility, and you refuse consent, the school may not be obligated to continue providing special education services. Refusing a reevaluation is a decision that should be made carefully and, if the situation is complex, with guidance from an advocate or attorney.

What if I request a reevaluation and the school says the existing data is sufficient?

The school can determine that existing data is sufficient to answer all required questions without new testing. If you disagree with that determination, you have the right to request an Independent Educational Evaluation to obtain new assessment data. Present the IEE findings to the IEP team for consideration.

How long does a reevaluation take?

From the date you provide written consent for new assessments, the school typically has 60 calendar days to complete the evaluation and hold the eligibility meeting. Timelines vary by state — some states have shorter windows. The existing data review that precedes the consent decision does not have a strict federal timeline, but should occur promptly after your written request.

Can the school initiate a reevaluation without my consent?

The school can propose a reevaluation at any time, but must obtain your written informed consent before conducting any new assessments. The existing data review can occur without consent, but no new testing can be administered without it.

My child's last evaluation was done by the school five years ago. Can I request a new one?

Yes, and you should. Any evaluation more than three years old should have already triggered a triennial reevaluation — if that has not happened, the school is out of compliance. Request the reevaluation in writing immediately and note that the three-year timeline has passed.

If your child's current IEP is built on evaluation data that is years out of date, or if you want to understand whether a reevaluation is likely to strengthen or complicate your child's current services, our IEP Review Service can walk through what the current data shows and what a reevaluation might reveal. Our School Appeal Letter Templates include a template for formally requesting a reevaluation and for challenging a school's refusal to evaluate.

For more on IEP rights and the evaluation process, visit our IEP vs. 504 Guide.

Disclaimer: This post is for general informational purposes only and does not constitute legal advice. Reevaluation timelines and procedures vary by state. Consult a qualified special education advocate or attorney for guidance specific to your child's situation.