Rob Stone appeared in atleast 2 After School Specials. "Ace Hits The Big Time" aired on 04/02/85 and "Face at the Edge of the World," which co-starred Malcolm-Jamal Warner" aired on 09/17/86. Both are now available on DVD. Read a review here:

http://www.sitcomsonline.com/afterschoolspecials19821986dvdreview.html