Young Sheldon 2x18 "A Perfect Score and a Bunsen Burner Marshmallow" Season 2 Episode 18 Promo Trailer - Sheldon moves in with Dr. Sturgis (Wallace Shawn) for the weekend to see what his life will be like in college. Also, a lonely Mary tries to bond with the other Coopers during Sheldon’s absence, on YOUNG SHELDON, Thursday, April 4th on CBS.