Colorado IEP requirements: the 90-day outer clock, transition at 15, and what the ECEA Rules actually say

Colorado writes its special education rulebook in the Rules for the Administration of the Exceptional Children’s Educational Act — the ECEA Rules, codified at 1 CCR 301-8 — and it does three things most states don’t. It wraps the entire referral-to-IEP sequence in a single 90-calendar-day outer clock. It starts transition planning at age 15 with a 9th-grade backstop, a year ahead of the federal 16. And it assigns every obligation to an “administrative unit” rather than a school — vocabulary that changes how transfers work mid-evaluation. Everything below is cited to the ECEA Rules text (1 CCR 301-8, Section 4.00) or the federal regulations they incorporate.

Every Colorado deadline in one table

Two clocks, one calendar: 60 days to evaluate, 90 days consent-to-IEP

The evaluation clock is 60 calendar days — not business days like Virginia, not school days like Washington (neighboring Arizona also counts 60 calendar days, but ends its clock at the MET eligibility determination) — and it runs from the initiation of the special education referral (ECEA Rules 4.02(3)(c)). The rule defines initiation precisely: either the parent is informed of a school-initiated referral and provides written consent to evaluate, or the parent requests the evaluation and provides written consent. Both triggers include written consent, so as a practical matter day zero is the day consent lands — put the date on the consent form in your tracker, not the date of the meeting where someone first said “let’s refer.”

What makes Colorado unusual is the second number. The initial IEP must be developed within 90 calendar days of the date parental consent was obtained (4.03(1)(d)(i)). Between those two clocks sits the eligibility meeting, which the rules require only “within a reasonable time” after the evaluation is completed (4.02(6)(a)(i)) — no number attached. The 90-day outer clock is what closes that loophole: if the evaluation uses its full 60 days, the team has 30 left to hold eligibility and write the IEP. The federal 30-days-after-determination rule for the IEP meeting (34 CFR §300.323(c)(1)) still applies underneath, but the 90-day total is the line a state monitor can check against a calendar with no judgment calls.

Transition planning starts at 15 — or the end of 9th grade, whichever comes first

Colorado replaces the federal transition-content rule with its own: beginning with the first IEP developed when the child is age 15, but no later than the end of 9th grade — or earlier if the IEP team deems it appropriate — the IEP must include appropriate measurable postsecondary goals based on age-appropriate transition assessments related to training, education, employment, and where appropriate independent living skills, plus the transition services (including courses of study) needed to reach them, updated annually (ECEA Rules 4.03(6)(d)). The meeting notice for those IEPs must say that transition is on the agenda (4.03(7)(b)(i)). The federal floor is 16 (34 CFR §300.320(b)); Colorado’s grade-based backstop means a student who starts 9th grade at 14 needs transition content before they ever turn 15. Practically: run a transition assessment during 8th grade for every student on your caseload, because the freshman-year annual review is already a transition meeting. For how to write postsecondary goals that survive an Indicator 13 file review, see our guides to transition IEP goals and vocational IEP goals.

Administrative units, mid-evaluation transfers, and the other Colorado wrinkles

The ECEA Rules assign child find, evaluation, and IEP duties to the administrative unit — a district, a BOCES, or the Charter School Institute — for children ages three to 21. That vocabulary does real work in the transfer rules: if a student enrolls in a different AU after the 60-day evaluation clock has started but before eligibility is decided, the deadline exception applies only if the new AU is making sufficient progress toward completing the evaluation and the parent and the new AU agree on a specific completion date (4.02(3)(c)(iii)–(iv)). The same handshake logic runs through our guide to IEP transfer students. Other wrinkles worth knowing: a change of disability category or eligibility may only follow a reevaluation and a meeting considering its results (4.02(6)(c)) — with one exception. Students who exit by graduating with a regular diploma or by aging out at 21 need no exit reevaluation, but the AU must hand them a summary of academic achievement and functional performance that includes recommendations for meeting their postsecondary goals (4.02(6)(c)(i)–(ii)). And Colorado allows parent-and-AU agreed IEP changes after the annual review without convening the team (4.03(2)(d)) — the mechanism covered in our amendment-without-a-meeting guide. One more distinctive: the ECEA is broader than IDEA — the same rulebook also covers gifted education, which is why Colorado teachers sometimes see “exceptional children” used to mean both populations in CDE materials.

What this means for your caseload

• Log the written-consent date as day zero — it starts both the 60-day evaluation clock and the 90-day consent-to-IEP outer clock.
• Don’t let “within a reasonable time” drift: schedule the eligibility meeting the week testing wraps, because every day it slips comes out of the IEP-writing window.
• Calendar transition content by grade, not just age: end of 9th grade is a hard stop even for 14-year-old freshmen.
• On mid-evaluation transfers in, get the parent agreement on a specific completion date in writing — without it, the standard 60-day deadline applies to you.
• Build the summary of performance into your exit checklist for every graduating senior and every student aging out at 21.

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