Revealing mistake: Casper is shown tying together the shoelaces of the students in Kat's class. When the bell rings and class ends they all get up and fall down. If you look closely you can see that their shoelaces are not tied together.
Casper (1995)
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Directed by: Brad Silberling
Starring: Bill Pullman, Christina Ricci, Eric Idle, Cathy Moriarty, Chauncey Leopardi, Malachi Pearson, Spencer Vrooman
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More mistakes in Casper
Kat: In two years I have been to nine different schools, eaten in nine cafeterias. I can't even remember anyone's name.
Trivia: The interior of Whipstaff was built at Universal Studios. Early in production there were several moderate earthquakes in the Los Angeles area and many of the large cracks that appear on the walls, etc. were real.
More questions & answers from Casper
Chosen answer: It was most likely Pneumonia, which was very deadly before the discovery of antibiotics.
Donald Jenkins