Principal Skinner hosts a diversity forum that discusses the different perceptions of men and women in core academic subjects, more specifically math. The forum goes astray, and Springfield Elementary gets a new principal that feels it's best to separate boys and girls in order to provide the best math education to each group. She develops this opinion based on stereotypes of boys and girls.
Five high school students, all from different stereotypes (brainiac, athlete, basket case, princess, and criminal) report to detention on a Saturday. The narrator indicates that these stereotypes don't truly reflect who the students are and are merely "convenient definitions" of them.