Corrected entry: The whole day's time sequence is terribly out of whack. For instance, when Rooney is wiping his face off after being spat on by the "Karate Champ" girl in the pizza joint, Ferris catches a fly ball. Harry Caray's play-by-play call can be heard in the background. He's calls the name "Lee Smith," indicating Lee Smith was on the mound for the Cubs. Lee Smith was a closer and likely would not be in the game until the 9th inning. Most day games at Wrigley start at 1:20 and last at least 2 hours. Therefore, the time would be about 3:30 PM when Ferris caught the fly ball. After that, he had time to make it back down to the Loop for a parade (presumably by elevated train), pick up the car, get back up to the North Shore (probably a decent 30 minute ride) take a dip in the pool, save Cameron's life, and race home to be in bed by the time his parent arrived home (6:00 sharp if you'll recall the father's lines at the beginning.) That's bad continuity. Aside from that, prior to the game, they dined at Chez Quis and went to the Museum (South Loop area).
Corrected entry: At the beginning of the movie, Ferris' mother is examining her sick son and says to Mr. Bueller, "He doesn't have a fever, but his hands are cold and clammy and he says he's seeing spots." At the end of the movie, when Ferris narrowly beats his parents home and they enter his bedroom, Mrs. Bueller again touches her son's forehead and says, "You're still warm." I thought he didn't have a fever.
Corrected entry: The movie supposedly takes place in April, however based on Chicago's climate, it is quite clear that the actual filming was conducted well into the summer months based on how full and leafy all the trees are, not to mention the ivy on the outfield wall at Wrigley Field which does not become fully developed with leaves until late May at the earliest.
Corrected entry: In the scene where the nurse tells Sloan in the hallway about her grandmother's passing, if you look past them, you can see Jeanie standing at the very end of the hall. Evidently she is waiting for the scene that shows the camera moving in on her later in the movie.
Corrected entry: At the end of the film Ferris introduces himself to two bikini clad woman sunbathing in their garden. The setting sun and long shadows show it is late afternoon or early evening. Ferris is wearing a heavy jacket so it is not an especially warm day, and both women are in heavy shadow! They aren't going to get much of a tan.PEDAUNT
Corrected entry: Jeanie doesn't undo her seatbelt before she jumps out of the station wagon. And additionally in one shot of the car parked - the seatbelt is slammed in the door of the car and hanging out but when they cut back to the car seconds later, the seatbelt is gone.
Corrected entry: When Jeanie is racing to beat Ferris home, a cop chases Jeanie and eventually Jeanie pulls over. Later, Mom says that Jeanie got a speeding ticket. It is unlikely that Jeanie would have gotten home before Ferris or Dad after pulling over and getting a speeding ticket(s), yet somehow Jeanie gets home first.
Corrected entry: When there is a commotion in Rooney's office and Grace is on the phone a green binder appears on Rooney's desk. It was not there before.
Corrected entry: When Ferris rings Rooney to asks if his sister can bring any work assignments home, he's speaking with a healthy, cheerful voice. Seems weird that someone as smart as Ferris completely forgets that he is meant to be sick that day, especially when he is speaking to the Dean.Gavin Jackson
Corrected entry: At the beginning of the movie when Ferris and Cameron are taking his dad's Ferrari out to pick up Sloan there is a very old green classic car in the background of the garage. Later in the movie when they return it is missing. It isn't very likely that sometime during the day Mr. Fry returned home from work to take it out for a drive without noticing the Ferrari which he never drives is missing.
Corrected entry: In the scene where Ferris jumps into the pool to save Cameron, you see the white chair before he jumps into the water. The chair gets knocked into the water and you can see it floating from beneath the water's surface. When Ferris drags Cameron out, you can see that the chair is gone, not floating or on land.