South Dakota IEP and Evaluation Timeline: The 25-School-Day and 30-Calendar-Day Rules

Parents in other states often ask about a "60-day evaluation timeline." South Dakota uses a two-part sequential timeline that works differently: 25 school days after signed consent, followed by 30 calendar days. When understood correctly, it gives parents a clear schedule to track.

Missing the nuance between school days and calendar days in this framework is one of the most common ways districts slip past their legal deadlines without parents realizing it.

The Two-Part Timeline: How It Actually Works

Under ARSD 24:05:25:03, South Dakota's evaluation timeline has two sequential segments:

Part 1: Evaluation Completion — 25 School Days

From the date the district receives signed parental consent for an initial evaluation, the district has 25 school days to complete the comprehensive evaluation. This means all assessments — psychological, academic, speech-language, occupational therapy, or any other area related to the suspected disability — must be finished within 25 school days of your signature.

School days means days school is actually in session. Weekends, school holidays, winter break, and spring break do not count. This matters because a consent form signed in late October is not on the same calendar as one signed in April. A district has a very different window depending on when the school year's breaks fall.

Part 2: IEP Meeting — 30 Calendar Days

Once the 25-school-day evaluation period ends, the district has 30 calendar days to complete the written evaluation report, determine eligibility, and hold the initial IEP team meeting.

These 30 days are calendar days — weekends and school holidays count. The district cannot claim a winter break extended this window.

Combined, the full process from consent to IEP meeting should not exceed roughly 10 to 12 weeks during an active school term, depending on where breaks fall.

Why a Generic "60-Day Rule" Does Not Replace South Dakota's Timeline

South Dakota's applicable framework under ARSD 24:05:25:03 is the 25-school-day evaluation period followed by 30 calendar days for the written reports, eligibility determination, and initial IEP meeting. Use that state framework rather than relying on a generic 60-day reference.

Occasionally, parents in South Dakota encounter districts that cite a "60-day" window. The correct citation to track the South Dakota process is ARSD 24:05:25:03.

When Timelines Can Be Extended

The timelines may be extended by mutual written agreement:

1. Mutual written agreement. If the school administration and the parents both agree in writing, the timeline can be extended. This agreement must be documented and signed by both parties. If someone from the school verbally asks for more time and you say "okay" on a phone call, that does not constitute a valid timeline extension under state law.

If none of these exceptions apply and the district misses either the 25-school-day evaluation completion or the 30-calendar-day IEP meeting, that is a procedural violation of ARSD 24:05:25:03 — and it can be the basis of a state complaint.

Re-Evaluations: The Same Timeline Applies

The 25-school-day plus 30-calendar-day framework is not limited to initial evaluations. It applies equally to triennial re-evaluations — the three-year reassessment that determines whether a child continues to be eligible for special education.

For re-evaluations, the district must provide notice and seek parental consent. If parents do not respond despite documented, reasonable efforts by the district to reach them, the district may proceed with the re-evaluation. Other consent disputes should be addressed under the applicable IDEA and South Dakota rules.

How to Track These Timelines as a Parent

Create a simple log the moment you sign the consent form. Record:

• The date you signed consent
• Whether school was in session that day (if not, when school resumes is your Day 1)
• The 25th school day after consent was signed (your evaluation completion deadline)
• 30 calendar days after the 25th school day (your IEP meeting deadline)

If you're unsure how to calculate the 25th school day, ask the district's special education director in writing: "Based on my consent signature date of [date], what is the district's timeline for completing the evaluation and holding the initial IEP meeting?" Put that in an email. If the date they give you is later than the state law requires, you'll have documentation of their answer when you need to follow up.

What to Do If the District Misses the Deadline

If the 25-school-day evaluation window passes without completed assessments, or if the 30-calendar-day period passes without the initial IEP meeting being held, act quickly:

Send a written notice to the special education director. State that the evaluation/IEP meeting deadline has passed without the required action, cite ARSD 24:05:25:03, and request confirmation of when the district will complete the evaluation and schedule the meeting.

File a state complaint with the SD DOE. Timeline violations are among the most clearly documented and straightforward to investigate. You'll need your signed consent form date, any correspondence with the district, and the school calendar showing school days in session. The SD DOE must issue a written decision within 60 calendar days of receipt; an extension may not exceed 30 days.

Contact South Dakota Parent Connection. As the state's federally designated Parent Training and Information center, SDPC can help you understand your options and provide guidance on navigating the complaint process. Their Navigator Program offers individualized support, though wait times can be a factor if you need help before an imminent deadline.

MTSS Cannot Substitute for a Formal Evaluation

One of the most common timeline-related issues in South Dakota is districts insisting that a child must complete Tier 2 or Tier 3 MTSS interventions before they will refer for a special education evaluation. This is illegal under both federal IDEA guidance and South Dakota's administrative rules.

ARSD makes clear that if a disability is suspected, the district must proceed with the evaluation timeline — even if the child is advancing from grade to grade or currently receiving tiered support. MTSS is an early intervention system; it is not a legal prerequisite for a special education evaluation. A district cannot use a child's enrollment in Tier 3 intervention as a reason to delay signing a consent form and starting the clock.

If your school has told you they want to "see how the intervention goes" before evaluating your child, submit a written evaluation request immediately. The district must then address the request through the evaluation-and-consent process or issue Prior Written Notice if it refuses — both of which give you something concrete to act on.

For parents navigating rural districts where cooperatives manage evaluation services, timelines can be harder to track because the evaluator may be an itinerant specialist traveling to your district on a shared schedule. That scheduling challenge is the district's logistical problem, not a legal reason to miss the deadline. The South Dakota IEP and 504 Advocacy Playbook at /us/south-dakota/advocacy/ includes tracking tools and the letter templates specifically designed for these situations.

Quick Reference: South Dakota Evaluation Timeline

The 25/30 framework is South Dakota's contribution to protecting families from indefinite delays. Knowing exactly how to count gives you a concrete, enforceable deadline every time you sign a consent form.

See more South Dakota guides →