Colorado Extended School Year (ESY): Eligibility and How to Advocate for It

If your child loses skills over summer break and needs weeks to get them back, extended school year services could be written directly into their IEP. But in Colorado, ESY is not automatic — not for autism, not for any other disability category. The IEP team must determine eligibility using specific criteria under the ECEA, and districts that are short-staffed have a financial incentive to deny it.

Here's what you need to know to make the strongest possible case.

What ESY Is — and What It Isn't

Extended School Year services are specialized instruction and related services provided beyond the normal academic calendar at no cost to the family. ESY is not summer school. It is not enrichment programming. It is not a make-up for absences during the regular year.

Under ECEA Rule 4.03(8)(c), ESY is strictly designed to maintain skills a student has already learned — skills that would regress significantly without continued instruction and would take substantially longer to recoup than for non-disabled peers. The district cannot offer generic summer programming and call it ESY.

How ESY Eligibility Is Determined in Colorado

The determining factor is regression and recoupment data. The IEP team looks at what happens to the child's skills after breaks — winter break, spring break, summer — and how long recovery takes when school resumes.

A student qualifies for ESY in Colorado if:

Regression and recoupment: The data shows that the child experiences severe or substantial regression of critical skills during extended breaks, and the time needed to recoup those skills is significantly longer than for peers without disabilities.

Predictive factors: The ECEA also allows eligibility based on predictive factors — specifically, when a child is at a critical juncture where a breakthrough skill is emerging and requires uninterrupted practice to consolidate. A child learning to communicate via AAC, for example, may not have regression data yet, but the IEP team can make a predictive determination that summer interruption would prevent skill consolidation.

Two things the district cannot use to deny ESY: the absence of a formal diagnosis as the sole reason (diagnosis alone neither grants nor denies ESY), and the unavailability of staff or programming. Staffing limitations are not a legally valid basis to deny a service the IEP team has determined a child needs.

What Data You Need Before the ESY Discussion

If you want to advocate effectively for ESY, come to the IEP meeting with documented evidence of regression. This includes:

• Teacher notes or data collection sheets from the first weeks back after winter break and spring break, showing how long it took to return to baseline
• Progress monitoring data from the end of one grading period compared to data at the start of the next
• Your own written records of regression at home — loss of self-care skills, communication regression, sleep disruption, behavioral escalation upon school return
• Any therapist notes (private OT, SLP, ABA) observing skill loss during breaks

If the district has not been collecting regression data, that itself is a problem. Data collection is part of measuring progress on IEP goals, which is a requirement under ECEA. If there's no data, request a Prior Written Notice documenting what data-collection process the district has been using to determine ESY eligibility — that PWN creates a record if you need to escalate.

The ESY Planning Timeline

ESY eligibility is supposed to be determined during the annual IEP review, not at a separate, later meeting. The IEP team considers regression and recoupment data and makes a determination before the end of the school year so that services can be arranged in time for summer.

Colorado ESY programs typically run for a minimum of 20 days, though the duration, frequency, and type of services must be individualized based on the child's IEP — not based on what the district's summer program happens to offer. A child whose IEP includes 90 minutes of speech therapy per week during the school year should not be offered 30 minutes per week simply because that's what fits the district's ESY schedule.

What to Do If ESY Is Denied

If the IEP team determines your child does not qualify for ESY, you have the right to receive that determination in a Prior Written Notice. The PWN must explain what data the team relied on, what options were considered, and why the team concluded that regression and recoupment data did not meet the threshold. If the denial is based on inadequate or missing data rather than actual evidence of no regression, that PWN becomes the foundation of a State Complaint.

Common grounds for a successful ESY-related State Complaint include:

• The IEP team never discussed ESY at the annual review (failure to consider)
• The district offered a generic summer program and classified it as ESY without individualizing it
• The district used staffing or budget constraints as the stated reason for denial
• The team's decision was based on the disability category alone rather than individual regression data

ESY disputes are among the most winnable State Complaints in Colorado because the eligibility criteria are clear and the district's data obligations are specific. If the data shows regression and the district still said no, that's a documentable procedural violation.

The Colorado IEP & 504 Advocacy Playbook includes a worksheet for collecting and presenting regression and recoupment data at the IEP meeting, along with a PWN request template to use if ESY is denied. See the full toolkit at /us/colorado/advocacy/.

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