Colorado Special Education Evaluation Timeline: The 60-Day and 90-Day Rules Explained

When a parent requests a special education evaluation in Colorado, a legal clock starts ticking the moment they sign consent. Most parents don't know what that clock measures — or that Colorado's rules are stricter than the federal baseline. Districts sometimes count on that ignorance.

Here's the exact timeline you need to hold your district accountable.

The 60-Calendar-Day Evaluation Window

Under ECEA Rule 4.02(3)(c)(ii) — codified at 1 CCR 301-8 — once a parent signs and returns written consent to evaluate, the Administrative Unit has exactly 60 calendar days to complete the evaluation.

Three things about this rule that catch parents off guard:

It's calendar days, not school days. Many parents assume the clock runs on school days, which would give districts considerably more time. It doesn't. Sixty calendar days means sixty days on the actual calendar.

The clock pauses only for extended breaks. The only exception is a school vacation that exceeds five consecutive school days — typically winter break or summer break. Weekends, single-day holidays, and teacher professional development days do not pause the clock.

The deadline is hard. Missing the 60-day window is a compliance violation reportable to CDE. The district cannot grant itself an extension simply because they're short-staffed or a specialist is unavailable.

Within those 60 days, the AU must administer all necessary assessments and convene an eligibility meeting with the parent to determine whether the student qualifies for special education. The evaluation itself — the testing, the reports, the eligibility determination — all happens inside that window.

What Happens After Eligibility Is Confirmed

If the student is found eligible, a second deadline activates. The AU has an additional 30 calendar days to convene the IEP team and finalize the initial Individualized Education Program.

The combined timeline — sometimes called the 90-day rule — works like this:

• Day 0: Parent signs consent
• Day 60: Eligibility meeting must be complete
• Day 90: Initial IEP must be finalized (if eligible)

This 90-day combined window is a Colorado-specific implementation detail that national guides often miss because federal IDEA is less prescriptive about the IEP finalization deadline. CDE tracks this data rigorously through its Special Education End-of-Year snapshots, and missed timelines show up in AU compliance determinations.

The Consent-to-Evaluate Form Matters

The 60-day clock does not start at the school meeting where evaluation is discussed. It does not start when a teacher fills out an internal referral form. It starts on the date the AU receives the parent's signed, written consent to evaluate.

This distinction is sometimes exploited. A district may drag its feet on providing the consent form, hold informal conversations that don't count as formal responses, or respond to a parent's verbal request without issuing the paperwork. None of that triggers the timeline.

When you request an evaluation, put it in writing and explicitly state that you are ready to sign the consent form immediately. Cite ECEA Rule 4.02(3)(c) in your letter. Once you sign, keep a dated copy of what you submitted and to whom.

If the district refuses to provide a consent form within a reasonable period (typically 10 school days), they must issue a Prior Written Notice documenting their refusal with specific, data-driven reasons. That refusal is also something you can escalate to CDE.

What the District Must Assess

A compliant evaluation under ECEA must cover all areas related to the suspected disability. This is not a single test — it's a comprehensive, multidisciplinary assessment. Common components include:

• Cognitive assessment (e.g., Wechsler Intelligence Scale for Children, WISC-V)
• Academic achievement (e.g., Woodcock-Johnson IV)
• Behavioral/emotional assessment (e.g., Conners Comprehensive Behavior Rating Scales, BASC)
• Speech and language (if communication is a suspected area of need)
• Occupational or physical therapy assessments (if motor skills are a concern)
• Adaptive behavior (for intellectual disability eligibility)

The evaluation must use multiple measures — not just one test. If you believe the district's evaluation missed an area of suspected disability, you have the right to request an Independent Educational Evaluation (IEE) at public expense. The district must either agree to fund the IEE or file for due process to defend its evaluation.

What To Do If the District Misses the Deadline

Document the date you signed consent. If day 60 passes without an eligibility meeting, send a written notice to the Special Education Director of your Administrative Unit (which may be a BOCES, not the local school) stating that the ECEA 60-calendar-day timeline has been violated, citing Rule 4.02(3)(c)(ii). Request an immediate meeting date in writing.

If the district does not respond or disputes the timeline, you can file a State Complaint with the CDE. The state complaint is the most accessible escalation tool — there's no legal burden of proof on the parent, and CDE is required to issue a written decision within 60 days of receiving the complaint. Documented timeline violations are among the most straightforward complaints for the CDE to resolve, and decisions routinely include compensatory education awards when services were delayed.

The Colorado IEP & 504 Advocacy Playbook includes a letter template for requesting an evaluation with the correct ECEA citations, a version for following up when timelines are missed, and guidance on how to structure a state complaint for a timeline violation.

When MTSS Cannot Be Used to Delay Evaluation

One more point worth knowing: districts sometimes tell parents they must complete a Multi-Tiered System of Supports (MTSS) or Response to Intervention (RtI) process before a formal special education referral can happen. CDE guidance — consistent with federal memorandums — explicitly prohibits this. MTSS cannot be used to delay an evaluation when a disability is suspected.

If a school tells you your child has to "go through the tiers first," and you suspect a disability, you can simultaneously request a formal ECEA evaluation in writing. The RtI process and the special education evaluation can run concurrently. Knowing this prevents months of unnecessary delay.

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