During these years that your family member is immersed in school, make the most of the support they have to focus on emerging independent living skills, employment opportunities, and connections to your community. Typically, after age 21, school activities and school based services end. It is important to learn as much as you can about the road ahead so that you can begin to prepare your family member for a full life after school.
https://www.youtube.com/watch?v=3kQT9Riwc5M