Saved by the Bell S01E10 - Beauty and the Screech

After Kelly wins a pair of tickets to see George Michael in concert, she realizes she won't be able to go unless she gets an A on her upcoming Science test. Zack decides to stack the deck in his favor to be Kelly's plus one to the concert, so he arranges for Screech to tutor her. However, things don't go as Zack expects when she develops a crush on him and instead invites Screech to the concert instead of him.