Cory and Mr. Feeny switch roles for the day; Cory becomes the teacher, and Mr. Feeny becomes the student. Cory's lesson of the day is on prejudice. He shares the story of Anne Frank and explains how her plight exemplifies prejudice.
Eric visits Cory's class to give a talk on peer pressure. He shares that, next year when they move into seventh grade, there will be a large population of kids they have never met before who may think differently from them. Eric warns them that they may be pressured by their peers to make poor decisions.
Eric confesses to Mr. Feeny and tells him the reason for his strong performance on his recent test was that he received the answers from a former student. He shares with Mr. Feeny that he can never excel in academics; he's just an average student. His tutor confirms this sentiment and cites that he's not the "student type," which is why she felt comfortable providing him the answers.
Cory and Shawn present their report on air pollution, in which they contend that the air density affects the performance of baseball teams during home games. This is because the air density affects the speed at which the ball travels through the air. They use the Colorado Rockies and the Philadelphia Phillies as examples: The Rockies average four more home runs per game because Colorado's air is much cleaner than Philadelphia's.