Trivia: Throughout the movie, many different characters either sing the words to or hum the song "Danke Schoen". Ferris sings the words in the shower, Mr. Rooney hums it while he is waiting in front of the Bueller's house's door, Jeanie sings it while she is running down the stairs after she kisses Charlie Sheen, and Ferris sings it again during the parade.
Trivia: Hidden burlap sheets covered the ground where the Ferrari crashed so the ravine would be protected from the broken glass. The crew had little idea of how things would go when the car crashed to the ground; fortunately a fence was there or the vehicle may have rolled into the neighbor's yard.
Trivia: The exterior scenes were filmed at Glenbrook North High School in Northbrook, Illinois. John Hughes graduated from that school in the late 1960's. The interior scenes were filmed at Maine North High School in Des Plaines, Il.
Trivia: All of the glass walls inside the home used in the Ferrari scene were created by the crew. After shooting the film, the crew put the original glass back inside the house walls.
Trivia: The obese guy that is wearing the fishing gear, & dancing during the parade scene, is the film's prop master.
Trivia: A drawing of director John Hughes, appears on the Bueller's refrigerator, created by his then six year old son.