218. A Perfect Score and a Bunsen Burner Marshmallow

Aired April 4, 2019

When Sheldon asks why he can't take college classes full time after acing his PSATs, his parents agree to let him live with Dr. Sturgis on a trial basis to see what life away from home is like. Meanwhile, without Sheldon to fuss over, Mary tries to bond with the rest of her family.