"Grade School Confidential" is the nineteenth episode of the eighth season of the American animated television series The Simpsons. It originally aired on the Fox network in the United States on April 6, 1997. It was written by Rachel Pulido and directed by Susie Dietter. The episode establishes the long-term relationship between Seymour Skinner and Edna Krabappel. Bart witnesses a romantic moment between Principal Skinner and Mrs. Krabappel and acts as a snitch for them. However, they later embarrass him and he exposes their romance to the public.