Missouri IEP Transition Assessment: Form C and Age-Appropriate Evaluations

What Age-Appropriate Transition Assessments Actually Measure

Age-appropriate transition assessments (AATAs) are the empirical foundation of everything in your student's transition plan. Without current assessment data, the IEP team is writing goals in the dark — and that's exactly how families end up with boilerplate transition plans that don't match their child.

Missouri requires AATAs to be updated annually and to evaluate the student's strengths, preferences, interests, and needs across multiple domains: vocational interests, academic readiness, self-determination, and independent living skills. The data from these assessments feeds directly into the postsecondary goals on Model IEP Form C.

AATAs aren't a single test. They're a collection of formal and informal tools that might include interest inventories (like the RIASEC or Transition Planning Inventory), situational assessments in community settings, student interviews, teacher and parent questionnaires, and functional skill checklists. The point is to capture a real picture of where the student is now and where they want to go.

Missouri's Model IEP Form C

Form C is the section of Missouri's IEP that houses the transition plan. It's where the IEP team documents three mandatory components:

Measurable Postsecondary Goals (MPSGs) in at least two — and usually three — areas: training/education, employment, and independent living. Each goal must be stated in clear, observable terms and describe what the student will do after leaving high school. "After graduation, the student will enroll full-time in a career certificate program at a Missouri community college" is measurable. "The student will explore career options" is not.

A coordinated course of study that maps the student's remaining high school classes to their postsecondary goals. This multi-year plan details specific courses — career-technical education, modified academics, life-skills training — and must align with the student's Individual Career and Academic Plan (ICAP).

Transition services and activities that identify what the school, outside agencies, and the student will do each year to move toward the postsecondary goals. This includes agency referrals (Missouri Vocational Rehabilitation, Division of DD), community-based instruction, and skill-building activities.

The Eighth-Grade Trigger Is Coming

Under Missouri Senate Bill 638 (Section 167.903, RSMo), the transition planning mandate is shifting. Effective for the 2027–28 school year, postsecondary transition services must be included in the IEP before the student exits eighth grade — or younger if the IEP team determines it's appropriate.

This aligns special education transition planning with the general education requirement that every student have an ICAP by the end of eighth grade. The practical effect: families with students currently in middle school should push for transition assessments to begin now, so the first Form C is grounded in real data rather than rushed baseline guesses.

What Parents Should Check on Form C

Most transition plan disputes trace back to one problem: the plan isn't individualized. Here's what to verify at every annual IEP review:

Are the postsecondary goals based on current assessment data? Ask when the last AATA was administered and what tools were used. If the team can't point to specific assessment results, the goals may be cut-and-pasted from a template.

Do the goals reflect your student's actual preferences? Missouri requires that AATAs capture the student's interests and preferences — not just what's convenient for the district. If your student wants to work in automotive repair but the transition plan says "general employment," the plan doesn't meet the standard.

Is the course of study aligned? If the postsecondary goal is a career certificate program, the course of study should include relevant career-technical education classes — not just four years of core academics with no vocational component.

Are agency referrals documented? If the team expects Missouri VR or the Division of DD to provide transition services, those agencies must be invited to the IEP meeting (with written consent from the educational decision-maker obtained beforehand). A Form C that mentions "referral to VR" without documenting who will make the referral, when, and what consent was obtained is incomplete.

When the Assessment Data Is Wrong or Missing

If you believe the transition assessments don't accurately reflect your student's abilities or interests, raise that concern with the IEP team and request additional assessment data.

You can also request an Independent Educational Evaluation (IEE) at public expense if you disagree with the district's assessment results. The district can either agree to fund the IEE or file for a due process hearing to defend its assessment.

The Missouri IEP Transition to Adulthood Guide includes an IEP Goal Audit Worksheet that walks you through exactly what to look for in Form C, how to compare assessment data against postsecondary goals, and what to request in writing when the plan falls short.

See more Missouri guides →