What is different at a triennial IEP meeting

By the IEP Atlas editorial teamLast updated November 1, 2026

Short answer

A triennial IEP meeting is the meeting tied to your child's reevaluation, which must happen at least every 3 years. Beyond the usual review, the team looks at new or existing test data and decides whether your child still qualifies for special education and what their needs are now. It is often combined with the annual review.

"Triennial" means every three years. The reevaluation itself is the review of your child's needs. The triennial meeting is where the team talks about the results and decides what they mean. Federal rules say a reevaluation must happen at least once every 3 years, unless you and the school agree it is not needed.^[1]

For the yearly meeting, see what to expect at an annual IEP review. For all meetings, see the IEP meeting guide.

What makes the triennial meeting different

	Annual review	Triennial meeting
How often	At least every 12 months	At least every 3 years
Main question	Is the IEP working?	Does your child still qualify, and what are the needs now?
New testing	Not usually	Maybe. The team decides what data it needs.
Your consent	Not needed to hold the meeting	Needed before any new testing is done
Eligibility decided again	No	Yes
Written report	Progress reports only	A reevaluation report or summary of the data reviewed

Many schools hold the triennial and the annual review on the same day. Then the meeting has two parts: first the reevaluation and eligibility, then the new IEP.

Step one happens before the meeting

The team first reviews what it already knows: past tests, classroom work, progress data, teacher notes and what you share. From that, it decides whether more testing is needed.^[2] This step can happen at a meeting or without one.

If the team wants new tests, the school must ask for your written consent first.^[3] If the team decides no new tests are needed, it must tell you why, and you can still ask for testing.^[2] The guide on reevaluation without new testing covers that path.

An annotated example: a reevaluation summary

Here is a made-up summary for a child named Nora, in grade 6, who has a learning disability in reading. Hold it next to your child's report.

What the summary says	What it means
Data reviewed: 3 years of progress reports, state test scores, classroom reading checks, parent input form	The team looked at what it already had before deciding on testing.
New testing: reading achievement test and a reading fluency check, with parent consent dated January 9	Only some tests were redone. Nora did not need a full battery.
Results: reading fluency 96 words correct per minute on a grade 6 passage, up from 58 in grade 3	Big growth, but still below most grade 6 readers.
Eligibility: continues to meet criteria for specific learning disability	Nora still qualifies and keeps her IEP.
Needs now: reading fluency, written organization. Math no longer a need	One goal area is dropped, one is added.

Ask the team to explain any score you do not understand. It is fine to ask the same question twice. The guide on how to read a psychoeducational report explains common score types.

If the team says your child no longer qualifies

This is the biggest decision a triennial can bring. The school must give you prior written notice explaining the proposal and why.^[4] You can ask questions, share outside information and disagree. If you disagree with the school's evaluation, you can ask for an independent evaluation at public expense.^[5] Your Parent Training and Information Center can explain the options.

Questions to ask the team

You can say these word for word.

"What information did you look at before deciding on testing?"
"Which tests will you give, and why those?"
"Can I get the evaluation report a few days before the meeting?"
"How do these scores compare to three years ago?"
"Is any area of need being dropped? Why?"
"Is any new area of need being added?"
"Does my child still qualify? What is that based on?"
"If I disagree with the results, what are my options?"

What to do next

Find your child's last evaluation date. The IEP due date calculator shows when the next reevaluation is due.
Write down any new concerns, diagnoses or outside reports to share.
Sign or decline the testing consent form after reading it. Ask questions first.
Ask for the report ahead of time, and bring the IEP meeting checklist for parents.
For free help, contact your state's Parent Training and Information Center, found through the Center for Parent Information and Resources.^[6]

Frequently asked questions

Does a triennial always include new testing?

No. The team first reviews existing information. If that is enough, it may decide no new tests are needed and must tell you why. You can still ask for testing.

Can a reevaluation happen sooner than 3 years?

Yes. A reevaluation can happen when needed, or when you or a teacher ask, but usually not more than once a year unless you and the school agree.

Is the triennial the same as the annual review?

No, but they are often held on the same day. The triennial looks at eligibility and needs. The annual review updates goals and services.

Use it in IEP Atlas

Sources

34 CFR §300.303: Reevaluations, Legal Information Institute, Cornell Law School
34 CFR §300.305: Additional requirements for evaluations and reevaluations, U.S. Department of Education (IDEA website)
34 CFR §300.300: Parental consent, U.S. Department of Education (IDEA website)
34 CFR §300.503: Prior notice by the public agency; content of notice, U.S. Department of Education (IDEA website)
34 CFR §300.502: Independent educational evaluation, U.S. Department of Education (IDEA website)
Center for Parent Information and Resources, CPIR

Written and checked by the IEP Atlas editorial team under our editorial policy. This guide describes general practice and federal rules. It is not legal advice; your state may add requirements, and the IEP team makes the decisions for each student.