For a class project, the kids and the teachers switch places, and Kelly becomes the history teacher and Zack becomes principal; things get complicated when Kelly's class fails a test Zack is forced to make a decision about how to punish them.
When the gang produces a cable access show, Screech's cooking segment is a hit, so the gang decides to sell his famous spaghetti sauce; as a result of Screech's success, he lands a girlfriend. Soleil Moon Frye guest stars.
When the gang creates a teen hotline to help teenagers with their problems, Zack connects with a girl with a disability. Jennifer Blanc guest stars.