What the Reevaluation Requirement Is
Under the Individuals with Disabilities Education Act, schools are required to reevaluate students with IEPs at least once every three years. This is often called the triennial review or triennial evaluation. The purpose is not administrative. It exists to determine whether the student still has a disability, whether that disability continues to affect their educational performance, and whether they still need special education services.
A reevaluation can also happen before the three-year mark. This occurs when the school determines it is necessary, when the parent requests it, or when a change in the student’s eligibility category is being considered. Schools cannot wait out the clock if a student’s needs have clearly shifted. Parents do not have to wait either.
The Existing Data Review
The reevaluation process begins with a review of existing data. The IEP team, which includes the parent, looks at the student’s current IEP goals and progress toward them, teacher and service provider reports, any recent assessment data, and parent input. Based on this review, the team decides whether additional testing is needed or whether existing information is sufficient.
This is the stage where parent input matters most. Before the existing data review meeting, submit a written statement to the school that outlines what has changed for your child since the last evaluation, what concerns you currently have, and what areas you want assessed. Written input creates a record and ensures your observations are part of the team’s review, not just a conversation that gets summarized away.
Parents should provide written input before the existing data review, not just at the IEP meeting. That is when the team is deciding whether to do any new testing at all.
When New Testing Is Required
If the existing data is not sufficient to determine whether the student still has a disability, what their current educational needs are, or whether they still need special education, the school must conduct new testing. The school cannot simply decide no new testing is warranted and move on without that determination being well-supported.
Parents can also request that new testing be conducted. Once a parent makes that request, the school has two options: conduct the testing or provide written prior notice explaining why it believes the evaluation is not needed. The school cannot simply decline without providing that written notice. If new testing is needed and the school refuses, that refusal must be in writing and must explain the school’s reasoning. That documentation matters if you need to escalate later.
Areas the Reevaluation Should Cover
The reevaluation must cover all areas of suspected disability, not only the areas that were part of the original evaluation. A student who was identified with a reading disability at age seven is not the same student at age fourteen. If anxiety, executive function challenges, social difficulties, or other concerns have emerged or become more apparent since the initial evaluation, those areas belong in the reevaluation.
Schools sometimes conduct narrow reevaluations that only revisit the original eligibility areas and ignore what has changed. This is how students end up with IEPs that are built on outdated data and do not reflect what the student actually needs now. Parents should specifically name new areas of concern in writing before the existing data review so the team cannot overlook them.
A reevaluation that only re-tests the original eligibility areas without accounting for new concerns is not a complete reevaluation under IDEA. If your child’s presenting difficulties have changed, the reevaluation should reflect that.
Parent Right to Request Independent Evaluation
If you disagree with the school’s evaluation, you have the right to request an independent educational evaluation, or IEE, at public expense. This means the school pays for an evaluation by a qualified professional outside the school district. When you request an IEE, the school must either fund it or file for due process to defend its own evaluation.
This right applies to reevaluations, not only initial evaluations. If the triennial evaluation was conducted poorly, used inappropriate instruments, missed important areas, or produced results you believe do not reflect your child’s actual functioning, an IEE request is an appropriate next step. The IEE results must be considered by the IEP team.
What Happens After the Reevaluation
After testing is complete, the IEP team meets to review the results and determine whether the student continues to be eligible for special education. If the student is still eligible, the IEP must be updated to reflect their current needs based on the new data. The reevaluation should drive changes to present levels, goals, services, and accommodations, not simply confirm the existing IEP.
If the team determines the student is no longer eligible, the school must provide written prior notice before ending any services. A student cannot be found ineligible and removed from special education without a reevaluation having been completed first. That protection exists specifically to prevent schools from exiting students based on informal impressions rather than data.
Using the Reevaluation Strategically
The triennial is one of the few times the school is required to look at your child with fresh eyes. Use it. Before the existing data review, put in writing what has changed, what concerns you have not seen addressed, and what areas you want evaluated. If your child is now in a different grade band, name the new academic and functional demands they face. If there are areas, such as processing speed, adaptive behavior, or emotional regulation, that have not been formally assessed, request that they be included.
The goal is to make sure the reevaluation produces current, useful data that the team must address. Evaluations that are driven by parent input and documented requests tend to be more thorough than evaluations where the school is simply going through a required cycle.
What Schools Get Wrong
Three patterns appear regularly in reevaluations that shortchange students. First, schools rely entirely on teacher rating scales and behavior checklists without administering any standardized assessments, then conclude the student still qualifies based on ratings alone. Second, the team reviews existing data and concludes no new testing is needed for a student who has clearly changed over the past three years, often because no one pushed back. Third, the school re-administers the same battery of tests used at the initial evaluation without considering whether those instruments are appropriate for the student’s current grade level and presenting concerns.
None of these approaches produces the current, accurate picture of a student’s needs that the reevaluation is supposed to provide. If the evaluation does not reflect your child, the IEP built on it will not reflect your child either.
Frequently Asked Questions
The school said my child’s triennial review does not require new testing. Is that accurate?
It can be. IDEA allows schools to determine that existing data is sufficient and no new testing is needed. However, parents can request new testing, and the school must either conduct it or provide written notice explaining why it is not needed. If your child’s needs have changed significantly since the last evaluation, a request for new testing is appropriate and should be documented in writing.
Can I request a reevaluation before the three-year mark?
Yes. Parents can request a reevaluation at any time, and the school must respond. The school can decline if an evaluation was conducted within the past year, but must provide written notice of the refusal. If your child’s needs have changed, a new diagnosis has been made, or the current IEP no longer seems to reflect their actual abilities, a written request for reevaluation is appropriate.
My child is 3 years older since the last evaluation. How much can change?
Significantly. Academic demands increase substantially from elementary to middle school and again in high school. Cognitive processing requirements change. A child who showed mild learning difficulties at age 7 may have much more pronounced needs at age 10 or 14. Reevaluations should reflect the child’s current functioning at their current grade level, not simply re-administer the same tests that were used three years ago.
Reevaluation Coming Up for Your Child?
Meghan reviews reevaluation results and prepares families for the eligibility meeting that follows, so that updated data actually changes what the IEP provides.
Learn About IEP Document Review