With graduation day approaching, Zack discovers he needs to gain one more credit in order to graduate. This results in Zack having to be in dance class and perform in the ballet to get that last credit. In the main plot, Jessie is expecting to be named valedictorian due to her good grades, but Screech's GPA is barely higher than hers. However, Screech tells Mr. Belding being valedictorian is not important to him, and privately gives it to Jessie. When Jessie starts getting a swelled head, Lisa reveals that Screech abdicated his position as valedictorian because it meant more to her, so she tries to find some way to honor him at the closing ceremony.