Season 4: Episode 89: Twinkle, Twinkle Little Star
Rudy tries to keep Cliff and Clair from finding a letter from her teacher, Mrs. Abbott. She is unsure about its contents, but assumes that she is in trouble because she thinks that her teacher hates her. Cliff and Clair go to the school to meet with Mrs. Abbott. She says that Rudy is a good student and generally well-behaved. She has only had problems in music class, where she has refused to play the violin. Although the kids can switch instruments every two weeks, Rudy became impatient and tried to take the cymbals from Kim. Cliff manages to convince Rudy to give the violin a try. He invites Kenny and Kim over to rehearse. Kenny warns that the girls will get into a fight, but Rudy only briefly tries the cymbals while Kim is in the bathroom. Meanwhile, Theo studies to become a psychic in the hopes of being able to pass his tests without studying.