Kelly and the Professor

Kelly and the Professor is the thirteenth episode of Saved by the Bell: The College Years.

Summary
A jealous Zack strikes back at Kelly and Professor Lasky with a vengeance by spreading the word about their May–December affair, which climaxes at a costume ball. Meanwhile, Rogers gives the rest of the gang papers to fill out on a perfect mate profile for a psychology project, and Screech ends up getting the same mark as Alex.

Notes and Trivia

 * This has a similar plot line to a high school episode when Kelly also got involved with an older man in that case Jeff.
 * AC mentions the last costume ball he went to.