Aging out at 21: the cliff no one warned us about
Posted May 10, 2026
If you're a parent of a younger child, please read this thread with a notebook. I'm a parent of a 22-year-old, and I want to save you some of what we went through.
In the U.S., school-based services end at 21 (sometimes 18 or 22 depending on your state). One day there is a coordinated team — IEP, therapists, transition planning, a building to go to. The next day, there is… you. And a patchwork of adult systems that don't talk to each other: vocational rehab, Medicaid waivers, day programs, supported employment, housing.
Things I wish I'd known at age 14, not 20:
- Transition planning is supposed to start by age 16 in the IEP. Push for it to be real, not boilerplate.
- Apply for adult disability services before aging out. Waitlists for Medicaid waivers can be many years long in some states.
- Guardianship is not the only option — supported decision-making and powers of attorney exist and are less restrictive.
- Eligibility for adult services often hinges on IQ scores, not autism-specific need. Many capable autistic adults fall through this gap.
For parents currently navigating this — what worked, what didn't, and what's the one piece of advice you'd give to a parent whose kid just turned 14?