Saved by the Bell: The New Class (1993) : 4x8

Katie is happy when Nicky asks her to the upcoming Fall Formal dance. Maria's date's father will be a chaperone. He's Paul Wilson, a big record producer, and Ryan has a plan to get him to hear Eric and his brothers sing at the Formal. Maria and Rachel are super-excited about the new dresses they've bought for the dance, but Katie is beginning to feel ashamed because her parents can't afford a new dress for her this year. Mrs. Peterson alters a dress of Katie's sister's, though, which Katie plans to wear. Ryan engineers a breakup of the Bayside Barbershop Quartet (who were supposed to be the Formal's only entertainment!), then has Mr. Belding listen to Eric and his brothers. Belding gives them the job on the spot. Katie is afraid she will embarrass Nicky in an old dress. To raise money, she tells Screech she can fix the broken air conditioner that has been plaguing Mr. Belding. Screech gives her the job. She and Nicky manage to fix it, but it soon blows up. Katie confesses to Screech th