Continuity: The college, Great Lakes University, is presumably pretty far north and the movie takes place in January. All of the characters are dressed appropriately in winter coats, except for in the diving scenes, where it's warm, sunny, and perfect for getting a tan.
Great sites
Mistakes
When Thornton and Lou are making the Bruce Springsteen sign, the student at the table is supposed to be writing on a poster but you can see that the marker is not touching the paper. See more...
Trivia
When Mellon does the "Triple Lindy", you again can see the thinner body double's hairpiece flop in the wind to reveal a bald spot. See more...
Back to School mistakes
Continuity: At the least swim meet, Chaz is shown diving before Jason Melon. Howver, after Jason dives, it then shows Chaz "up next" - and his hair is completely dry.
Revealing: When Thornton and Lou are making the Bruce Springsteen sign, the student at the table is supposed to be writing on a poster but you can see that the marker is not touching the paper.
Back to School trivia
In the opening montage of shots, showing Thornton Mellon's progressive rise to the top, one of the final shots is actually that of Al Czervik, the role Rodney Dangerfield played in Caddyshack.
When Mellon does the "Triple Lindy", you again can see the thinner body double's hairpiece flop in the wind to reveal a bald spot.