A tough student challenges John to a fight; D.J., now on the boys wrestling team, prepares for a match.

Camilla and young science teacher Dr. Mackey grapple with mutual attraction; John and Donna are both nomiated for most popular teacher; D.J. tries to upgrade the cafeteria fare.

New teacher Donna Breedlove can't figure out why her students are not paying attention. Fellow teacher John Deerborn surmises the reason: she is so sexy that she is distracting the boys and making the girls jealous.

A pratical joke may have killed a visiting Russian teacher; Mr. Brawley's driver's-education class takes a wild ride.

The bus breaks down during a school ski trip, leaving class and teachers stranded at a deserted hotel; Mark falls victim to a practical joke.

Fourth-string quarterback Mark is set to start in a big game; Doona fets over John's former flame Catherine; Randy steals the rival school's pig mascot.