Description by couchtuner for The Simpsons Season 21 Episode 2 : Mrs Krabappel is fired from Springfield Elementary after Bart spikes her coffee, causing her to make a drunken fool of herself. She is replaced by a cool new teacher, Mr. Vaughn, who is a quick hit with the kids. Bart, however, struggles with the guilt and considers telling Principal Skinner the truth.
Watch It Here : The Simpsons Season 21 Episode 2 Bart Gets a Z
