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.
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.
Trivia: All the names on Danny McGrath's "people to kill" list, save Billy Madison, are various crew members. Perry Blake, production designer, has worked on over 25 Adam Sandler films. The names of Fitch Cady and Martin Walter were extended to "Cadyton" and "Walterson."
Trivia: When Billy is giving his answer in the final round, after he finishes, the audience stares at him in silence. He then shouts "Knibb High football rules!" and the crowd cheers and claps. This is the same as the scene from "Bill and Ted's Excellent Adventure" where after the jock finishes talking, the audience just stares at him and he shouts "San Dimas High school football rules!" and the crowd cheers and claps.
Trivia: The TV show with the talking dog Billy and everyone is watching, before the news breaks that Billy cheated, appears to be an episode of a 1990 Canadian TV show called "Dog House." However, the credits that are shown are crew members of the "Billy Madison" film with their job titles.
Trivia: When the kids are talking about video games, they say "Mortal Kombat" was the best game. Bridgette Wilson (who plays Veronica) had been passed up to play Sonya Blade in the "Mortal Kombat" film in favor of Cameron Diaz and so Wilson accepted the "Billy Madison" role. When Diaz dropped out, Wilson got the role as Sonya.
