ESY eligibility: regression, recoupment and critical skills

By the IEP Atlas editorial teamLast updated November 1, 2026

Short answer

There is no single federal test for ESY eligibility. Extended school year services are required when the IEP team decides, for that student, that they are necessary to provide FAPE. Most states and courts look at regression and recoupment, plus factors such as emerging skills at a critical point, the severity of the disability, and behaviors. The exact criteria vary by state.

Extended school year (ESY) means special education and related services provided beyond the normal school year, under the student's IEP, at no cost to the family. The federal rule says ESY must be available when the IEP team decides, on an individual basis, that it is necessary for the student to receive FAPE. A district cannot limit ESY to certain disability categories, and it cannot set the type, amount or length of services for everyone.^[1]

That is nearly all the federal rule says. It does not define "necessary." States, and the courts in each region, fill that gap with their own standards. So the honest answer to "what are the ESY eligibility criteria?" is: it depends on your state, but most states use some mix of the same factors. For how ESY differs from summer school, see ESY vs summer school. The pillar on least restrictive environment covers placement more broadly.

The factors teams commonly weigh

Factor	The question it asks	Typical evidence	State variation
Regression	Does the student lose skills over a break?	Data before and after winter or spring break, or last summer	Widely used; how much loss counts differs
Recoupment	How long does it take to regain lost skills?	Weeks to return to the pre-break level	Some state guidance names a set number of weeks; other states leave it to the team
Emerging skills or critical point	Is the student at a breakthrough point on a key skill that a break would undo?	Recent rapid progress on reading, communication or toileting	Named in some state rules, not in others
Nature and severity of disability	Does the disability make the student more likely to need continuous services?	Evaluation data, history	Considered as one factor; cannot be the only basis
Self-sufficiency	Would a break threaten skills the student needs for independence?	Self-care, communication, safety data	Common in state guidance
Interfering behaviors	Do behaviors return or worsen over breaks?	Behavior data across breaks	Some states list it explicitly
Special circumstances	Anything else the team believes makes ESY necessary for FAPE	Team judgment, documented	Most states leave room for this

No single factor decides it everywhere. Many states say regression and recoupment are not the only factors, and courts in different regions have read the standard differently. Check your state's current ESY guidance before the meeting. The CPIR summary is a good starting point for families and teams.^[2]

Regression and recoupment, defined

Regression is the drop in skill after a break. Recoupment is the time it takes to get back to where the student was before the break. Most students regress a little over a break and recover quickly. The question for ESY is whether this student's regression is greater than usual, or the recovery takes so long that the break undoes the year's progress.

Data from breaks during the year is the most useful evidence. A winter break of 2 weeks and a spring break of 1 week are natural experiments. Probe each goal in the 2 weeks before the break, the first day back, and weekly until the student returns to the pre-break level.

One student, one school year

This example is fictional. It shows how a team in a state that uses regression, recoupment and emerging skills might reach an answer.

Student: Ethan, age 9, autism, uses a speech-generating device. Two goals the team is watching: requesting with the device, and a 6-step handwashing routine.

Winter break, December 20 to January 5.

Goal	Before break (median of 3 probes, Dec 9 to 19)	First day back (Jan 6)	Weeks to recover
Requests with device per 20-minute snack	9	3	5 weeks (back to 9 on Feb 10)
Handwashing steps independent (of 6)	4	3	1 week

Spring break, March 24 to 28.

Goal	Before break	First day back	Weeks to recover
Requests with device	12	5	4 weeks (back to 12 on May 2)
Handwashing steps	5	5	None

What the team saw at the May 15 meeting:

Communication: Large regression after short breaks, and 4 to 5 weeks to recover. Over a 10-week summer, the team expects a larger loss. Ethan's requests also jumped from 3 to 12 per snack since January, which the team saw as an emerging skill.
Handwashing: Small dip, quick recovery. No sign that a break threatens this skill.

Decision: ESY for communication only. 2 sessions a week of 45 minutes with the SLP, for 5 weeks, focused on device requests during snack and play. No ESY for handwashing. The team documented the data, the factors used and the reasons in the IEP and the prior written notice.

The ESY services match the need, not a program menu. The rule bars a district from setting the same type, amount or length of ESY for everyone.^[1]

What to bring to the ESY discussion

Data from the 2 weeks before and after winter and spring breaks, for each goal
Last summer's data, if the student had ESY or if fall probes exist
Notes on any skill that is emerging fast
Behavior data across breaks
The parent's report of skills at home over breaks
Your state's ESY criteria and form

If you do not have break data, start now. One probe the week before and the first day back is better than nothing. The guide on how often IEP progress should be monitored covers scheduling probes.

Mistakes that weaken an ESY decision

Weak	Better
"ESY not needed; student made progress."	"Requests dropped from 12 to 5 after spring break and took 4 weeks to recover."
Deciding by disability category	Deciding by the student's data on each goal
Offering a standard 4-week, 3-day program to everyone	Setting ESY services for the goals and amount this student needs
Waiting until June to look at data	Collecting probes around winter and spring breaks
"Recoupment" with no number	Weeks to recover, with dates
Using only regression and recoupment when the state lists more factors	Checking every factor in your state's criteria

Where it goes in the IEP

ESY is an IEP team decision. It is usually made in spring, often at a separate meeting or as part of an annual review. Record the factors, the data and the decision. If ESY is provided, the IEP lists the goals it addresses and the service, frequency, location and dates. The IEP due date calculator helps when the ESY meeting needs to land before a deadline. Rules on timing, forms and criteria differ by state, so follow your state guidance.

Frequently asked questions

Is there a federal test for ESY eligibility?

No. Federal rules require ESY when the IEP team decides it is necessary for FAPE, but they do not set criteria. States and courts set the standards, which usually include regression and recoupment and often other factors.

What is regression and recoupment in ESY?

Regression is how much skill the student loses over a break. Recoupment is how long it takes to regain it. Teams compare these with what is typical to judge whether a summer break would undo the year's progress.

Can ESY be limited to certain disabilities?

No. A district cannot limit ESY to particular disability categories or set the same type, amount or length of services for everyone. The decision is made for each student.

Use it in IEP Atlas

Sources

34 CFR §300.106: Extended school year services, Legal Information Institute, Cornell Law School
ESY: Services Beyond the School Year for Students With IEPs, 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.