|Season 3, Episode 23|
|Air date||December 7, 1991|
A Home For Christmas (1)
Jessie and her new friend Graham protest the use of polystyrene foam cups at their school. Meanwhile, Zack dodges Belding after betting against Slater that he will be able to ditch his classes.
- Mark-Paul Gosselaar as Zack Morris
- Mario Lopez as A.C. Slater
- Dustin Diamond as Screech Powers
- Tiffani Thiessen as Kelly Kapowski
- Elizabeth Berkley as Jessie Spano
- Lark Voorhies as Lisa Turtle
- Dennis Haskins as Richard Belding
- David Kriegel as Graham
- Michael Warwick as Franklin Finkley
- When Zack took off the janitor's uniform at the beach he was wearing a watch, but he wasn't wearing it when he sat down in a chair next to Slater and Kelly.