Miss Bliss turns a practical joke into a lesson about the criminal justice system.

Screech finds that an intimidating student has a learning disability.

Zack schemes to steal a kiss from a returning former student who is now a famous rock star.

Zack is offered a chance to join a popular club.

A retired teacher with unorthodox methods stimulates the class when he substitutes for Miss Bliss.

Zack's scheme to get more time to study for a midterm ends up hurting his teacher.

Zack promises to help Screech get a date with Lisa if Screech will do Zack's term paper.

Zack and a classmate ask the same girl to an upcoming dance, jeopardizing their friendship.

Zack tries to cash in on a stock-market investment to get money to replace his father's video recorder.

Zack learns his father and teacher are dating.

A student opposed to killing animals for experiments releases all the science class frogs.

A student argument helps a teacher resolve a problem with a longtime friend.

Zack's summer romance with an older woman comes to a halt when she discovers he lied to her.