Versiones alternativas

In some edited-for-tv versions of the film, during the Jeopardy game at the end of the film, the scene of the host reading the "burning dog poo and the human response" clue has been removed. However, the clue can still be seen on the board in distant shots.

The network television version adds two scenes:

• After Billy's first day in 3rd grade he plays kickball with the Madison Manor employees.
• Erik tries to bribe Principal Anderson with a car, 1 million dollars and a hotel whenever and whereever he wants.

Network TV version has no blood and shows movement from the clown who falls down and gets "a hemorrage in his head"

The Australian network TV version cuts out the line "You gotta get out there, and find that fuckin' dog!" that Billy says commenting on the book "The Puppy Who Lost His Way" to reduce the M rating to a PG. Cable and Video/DVD versions are unchanged.

In the USA Network version, the words "People To Kill" are missing from Dan McGraff's list, effectively losing the punchline of that initial scene between Billy Madison and Dan McGraff.

British video and film versions were cut by 27 seconds to obtain a PG rating. The following cuts were made:

• Billy Madison's dialogue: "...Find the fucking dog" is removed
• Cut-away after the clown falls down; no blood is seen
• Eric is not shown engulfed in flames. The cuts were fully waived for the 2008 12-rated DVD.

When aired on TV, the part where Billy inquires as to why there's no Snack Pack in his lunch was altered. Billy's line of "You know I like that Snack Pack, why can't you must give me a Snack Pack?!" was changed to "You know I like that snack, why can't you just give me a lunch pack?" But when Juanita says "Snack Pack", it's still intact.

In the ABC TV version, the line "You gotta get out there, and find that fuckin' dog!" that Billy says commenting on the book "The Puppy Who Lost His Way" is deleted and replaced with a different shot of Billy saying "You gotta get out there, and find that stupid dog!" which is abundantly noticed since the shot zooms in closer on Billy's face.

In the original version, the bus driver says to Billy, "That Veronica Vaughn is one piece of ass." In the television version he says, "That Veronica Vaughn is one hot tamale."