Trivia: Throughout the movie, many different characters either sing or hum the song "Danke Schoen". Ferris sings it in the shower, Mr. Rooney hums it while he is waiting at Bueller's front door, Jeanie sings it while running down the stairs after kissing Charlie Sheen, and Ferris sings it again during the parade.
Trivia: The prop crew used four replica fiberglass Ferraris for the film. (01:24:30)
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 prevented the vehicle rolling into a 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. (01:24:50)
Trivia: The obese guy that is wearing the fishing gear, & dancing during the parade scene, is the film's prop master. (01:03:45)
Trivia: A drawing of director John Hughes, appears on the Bueller's refrigerator, created by his then six year old son.