Revealing: On Billy's first day of school when he is outside waiting for the bus and it just passes him you hear the noise of kids on a bus, but when it passes no one is in it.
Great sites
Mistakes
After chasing the penguin, his shirt is unbuttoned and he falls. When Juanita pulls him off the ground and tells him to get dressed, his shirt is buttoned. See more...
Trivia
Something to look for: In the scene where Billy calls the people to apologise, that guy crosses his name off the "people to kill list." If you look at the top of the list, the name Bob Simonds is there. Bob Simonds is the producer of the movie. See more...
Billy Madison mistakes
Continuity: In the scene when Billy and the bad guy are facing off in the "learning decathalon" and they are doing some science stuff, Billy pulls a shoe out of the boiling pot - it is his right shoe but he has his right shoe on his foot too.
Continuity: When Billy is on the bus and the kid dares him to touch Ms. Vaughn, when the camera is looking at the back of Billy's head, you can see in the background that Ms. Vaughn is 3 seats in front of him. Then after he tries to grab her and goes back to sit back down his seat is only 2 seats back.
Billy Madison trivia
The picture of Billy that Eric is using to monitor Billy's progress from grade to grade is the same headshot photo that was used in Happy Gilmore for the signboards some people were carrying in the crowds.
The pool that Billy appears in is of the exact same set of pools Navin R. Johnson [Steve Martin] used in The Jerk.
Something to look for: In the scene where Billy calls the people to apologise, that guy crosses his name off the "people to kill list." If you look at the top of the list, the name Bob Simonds is there. Bob Simonds is the producer of the movie.