During the parade several of the people seen dancing (including the construction worker and the window washer) originally had nothing to do with the film. They were simply dancing to the music being played and John Hughes found it so humorous that he told the camera operators to record it.

Cindy Pickett and Lyman Ward, who played Ferris' parents, married in real life after filming this movie. They later divorced in 1992.

John Hughes told Ben Stein, who had a degree in Economics, to present an actual Economics lecture in his scenes. Hence nothing Stein says (aside from the roll call) is scripted.

To produce the desired drugged-out effect for his role as the drug addict in the police station, Charlie Sheen stayed awake for more than 48 hours before the scene was shot.

The shot of Ferris playing the clarinet was done on the spot. Someone spotted the instrument as part of the set and Matthew Broderick said he could play it, which of course he couldn't.

The idea of a sequel had gone around for years with Ferris in college or on the job somewhere, but the idea was dropped. Matthew Broderick felt that the film didn't need a sequel, that this film was about a specific time and place that we'd all like to revisit and didn't need updating.

Even though they played siblings, stars Matthew Broderick and Jennifer Grey would later become engaged after this movie. Tragically, approximately a year later, after Broderick finished filming Biloxi Blues, and before Grey's premier for Dirty Dancing, the couple was involved in a fatal crash in Ireland, where the passengers of the other vehicle, a mother and daughter, died in the accident.

Ben Stein says he got the role of Bueller's Economics teacher through six degrees of separation. "Richard Nixon introduced me to a man named Bill Safire, who's a New York Times columnist. He introduced me to a guy who's an executive at Warner Brothers. He introduced me to a guy who's a casting director. He introduced me to John Hughes. John Hughes and I are among the only Republicans in the picture business, and John Hughes put me in the movie", Stein said. Hughes said that Stein was an easy and early choice for the role of the teacher: "He wasn't a professional actor. He had a flat voice, he looked like a teacher."

Cameron's father's Ferrari wasn't a real Ferrari. Because it was too expensive to rent one, three replicas were made--using an MG chassis--each with a fiberglass body.

In 2010, Edie McClurg told "Vanity Fair" magazine that her character's hairdo should be from the 1960s, "because Grace felt she looked best in the [1960s] and kept her look from that era." However, the womens hairdresser on the set had mainly been hired to blow out Mia Sara's long, straight hair and didn't know how to set the big 1960s hairstyles--so McClurg teased, set and styled her own character's hair. Once she arrived on the set, John Hughes looked at her hairstyle and the first thing he said was, "How many pencils do you think you can fit in that hair?" They tested it with one pencil, then two and three, but the fourth one fell out--so that was the origin of Grace's first scene in the movie, in which she pulls several lost pencils out of her hair.

After working together on Weird Science (1985), John Hughes offered Bill Paxton the role of the garage attendant. However, Paxton turned it down because he felt the role was too small. He admits that he regrets turning it down because Hughes never offered him a role again.

Grace the secretary pretending to be Ed Rooney during the phone call from Cameron was improvised.

According to the Inside Story (1986) documentary, Charlie Sheen's character's name is actually Garth Volbeck. There was going to be a whole back story to his character and family. It was also revealed that the Volbeck's was the family to whom Ferris' mom was showing the house for sale in her job as a realtor. If you look closely, the tow truck that towed Rooney's car was from Volbeck's Wrecking Service. Also, a deleted backstory shows that Ferris and Garth were friends in the eighth grade. Garth's family's pretty messed up, and Ferris tried to help him and be his friend, but Garth eventually dropped out of high school and wound up in the police station next to Jeannie. That's why Ferris is so intent on giving Cameron a good time - he blames himself for not helping Garth enough when he could.

Mia Sara says that Matthew Broderick actually tickled her feet and knees to get her to laugh naturally in the taxicab scene.

The hand that presses the speaker button on Cameron's phone belongs to John Hughes. When the crew left, Hughes took the camera and shot it himself since no one else was getting it right.

Whenever Mr. Rooney and Ferris have a conversation with each other, only one of them speaks throughout the entire conversation; the other is completely silent.

Mia Sara beat Molly Ringwald to the role of Sloane Peterson because--according to director John Hughes--she had elegance. According to Ringwald, "John wouldn't let me do it: he said that the part wasn't big enough for me".

The painting that Cameron admires is called "Sunday Afternoon on the Island of La Grande Jatte", by Georges Seurat. It is still on display at the Art Institute of Chicago.

When Grace says "He's a righteous dude", it was not in the original script. Edie McClurg ad-libbed it in her best Chicago accent.

Rooney's line about leaving "my cheese in the wind" was ad-libbed. John Hughes wanted a comment that was complete nonsense.

Matthew Broderick improvised the scene and the line with the clarinet: "Never had ONE lesson!"

John Hughes personally designed Ferris' bedroom, mirrored mostly on his own bedroom when he was in high school. Hughes said that the room was a disorganized series of pop references and other things because it would represent Ferris' mind.

Rob Lowe, John Cusack, Jim Carrey, Johnny Depp, Tom Cruise, Robert Downey Jr. and Michael J. Fox were all considered for the role of Ferris Bueller.

The line Ferris says in the bathroom at the French restaurant about Cameron's house being very pretty and very cold was originally supposed to be said by Allison in The Breakfast Club (1985) regarding her home life.

Most of the license plates are all abbreviations for titles of films by John Hughes. Katie's = VCTN (National Lampoon's National Lampoon's Vacation (1983)); Jeannie's = TBC (The Breakfast Club (1985)); Tom's = MMOM (Mr. Mom (1983)); Rooney's = 4FBDO (Ferris Bueller's Day Off (1986)). The exception is Cameron's Ferrari (seen when Ferris first pulls out of the garage), the license plate of which reads NRVOUS.

Ferris laments not having his own car, but does at least own a synthesizer--which cost $8,000 in 1984.

Charlie Sheen was recommended by Jennifer Grey after they did Red Dawn (1984) together.

Polly Noonan, who plays the girl Rooney sits next to on the bus, wore glasses that were specially made by the prop department. The lenses distorted her vision so much that they made her nauseous. Also, the glasses were so heavy that she had to hold her head in a certain position to keep them from falling down.

In the scene in which Sloane and Ed Rooney are standing outside, waiting for Mr. Peterson, the school in the background was John Hughes's old high school.

The Ferris Bueller character was named after John Hughes' lifelong friend Bert Bueller.

The outfit Ferris is wearing (hat, sunglasses and trench-coat) when he picks up Sloane from school can be seen on a mannequin in his room behind his door as his parents leave his room at the beginning of the movie to go to work.

There is a poster for Simple Minds' song "Don't You Forget About Me" on Ferris' wall. This song was featured prominently in director John Hughes' earlier film The Breakfast Club (1985).

The Parade sequence ("Twist and Shout" scene) was filmed during the Von Steuben Day Parade, an annual event in the Chicagoland area.

In the film, Ferris and Cameron are supposed to be 18 years old and Sloane, 17. In reality, Matthew Broderick was 23, Alan Ruck was 29, and Mia Sara was 18.

The hall scenes in which Jeanie is seen walking down the hall and the kid collecting money to save Ferris are the halls from The Breakfast Club (1985).

The dance sequence by the group on the stairs during Ferris' lip-synch performance of "Twist and Shout" is taken directly out of Michael Jackson's Michael Jackson: Thriller (1983) video.

Deleted scenes: - Ferris asks his dad on the phone about bonds his father purchased when he was born, he then takes one of them from a shoebox in his father's closet, cashes it at the bank with his girlfriend (telling the hard-of-hearing teller they are pregnant with a jeep), and uses the money to pay for his day off. It was removed because it made Ferris look like a thief rather than a lovable rogue - Ferris orders something in French on the menu, and after everyone at the table tastes it, he is informed by the snooty waiter that he ordered "sweetbreads", which is a French dish made from the thymus gland. It was removed because it showed the waiter getting the better of Ferris, but later in the movie when Ferris is recounting the day to Cameron, he remarks "we ate pancreas".

The 1961 Ferrari GT250 was a modified MG sports car. The producers received several angry letters from car enthusiasts who thought the car shown was a real Ferrari that was actually wrecked.

The short scene with the coughing keyboard was actually improvised by Matthew Broderick. This is explained in the commentary on the DVD.

The song "Danke Schoen" is heard four times in the movie; When Ferris sings it in the shower, when Ed Rooney sings it after ringing the Buellers' doorbell, when Ferris lip-syncs the Wayne Newton version during the parade, and when Jeanie sings it while walking down the stairs at the police station.

The shot of the street looking down from The Sears Tower was done by the second-unit crew. The camera person who operated the camera got sick because he had to be held over the side to get the shot.

The bus scene that plays during the ending credits was a scene cut from the movie. It was meant to take place after Jeanie announced that she called the police, and Rooney had to find a place to hide. This explains why the sky isn't dark, and why a bus is taking students home at 6:00 pm.

The first edit of the film had a running time of 2 hours and 45 minutes.

The French restaurant Bueller crashes is "Chez Quis", which is a pun, as said aloud it would be "Shakeys", the pizza chain. "Chez Qui" means "the house of whom" in French.

During the scene where Rooney fights with the intercom at Ferris' house, there is a shot of the kitchen. On the refrigerator in that shot is a drawing of John Hughes, done by his son who was six at the time.

The text that appears on the screen when Ferris is explaining how to fake being sick to his parents was added later because John Hughes thought the scene was too flat and not funny enough (according to him in the DVD Commentary).

When Ferris hacks into the school's computer to change the number of absences he had, it is a subtle reference to a scene in WarGames (1983) when Matthew Broderick hacks into the school's computer to change his grades.

The final scene in the garage was shot in early fall, so each of the leaves on all the trees outside had to be hand-painted green every morning before shooting. In the shot looking up from the wreck at the three friends, the yellow tree with most of its upper leaves gone can be seen reflected in the window.

The modernist house of Cameron Frye is located at 370 Beech Street, Highland Park, Illinois, known as Ben Rose House designed by architects A. James Speyer, who designed the main building in 1954, and David Haid, who designed the pavilion in 1974, and once owned by photographer Ben Rose. Ben Rose had a car collection in the pavilion, as Cameron's father has the Ferrari 250 GT California in the same pavilion in the movie. According to Lake Forest College art professor Franz Shulze, during the filming of the scene where the Ferrari crashes out of the window, Haid explained to John Hughes that he could prevent the car from damaging the rest of the pavilion. Haid fixed connections in the wall and the building remained intact. Haid said to Hughes afterward, "You owe me $25,000", which Hughes paid.[23] Other scenes were shot in Chicago, River Forest, Oak Park, Northbrook, Highland Park, Glencoe and Winnetka, Lake Forest and Long Beach, California. After Ben Rose's death in 2009 the house came up for sale and was sold in 2014.

This film takes place on June 5, 1985.

A number of key moments in the movie were created in the editing room: Jeannie kicking Rooney three times in the face (when there was in fact only one kick filmed); Ferris and Sloane's kiss in front of Rooney was originally just a brief kiss, but was later edited into the long kiss seen on film.

The Cubs game depicted in the movie that Ferris and his friends attend was an actual game played against the Atlanta Braves on June 5, 1985, based on research by Larry Granillo published in his Wezen-ball column at baseballprospectus.com on February 6, 2011.

The number "9" was chosen for the number of Ferris' absences because it sounded harsh when spoken by Rooney.

When the Ferrari crashed, the fiberglass hood ripped, but branches were put over the rip to make sure the camera didn't record it.

According to John Hughes, Cameron was based, in large part, on a friend of his in high school. "He was sort of a lost person. His family neglected him, so he took that as license to really pamper himself. When he was legitimately sick, he actually felt good, because it was difficult and tiring to have to invent diseases but when he actually had something, he was relaxed."

Anthony Michael Hall turned down the role of Cameron to avoid being typecast.

The yellow and red insignia on Ferris' beret is that of the US Army's 32nd Armored Regiment; the motto at the bottom--illegible in the film--reads "Victory or Death". This was Elvis Presley's unit when he was in the army and in G.I. Blues (1960).

Ferris wears a different outfit in each scene before he and Cameron go to pick up Sloane.

According to Alan Ruck, the role of Cameron had originally been offered to Emilio Estevez who turned it down. "Every time I see Emilio, I want to kiss him", said Ruck. "Thank you!"

Early drafts had the Ferris family having younger siblings. When it came time to edit, the final draft actually has evidence that Ferris in fact does have younger siblings, such as drawings on the fridge and a family photo seen in his dad's office.

John Candy auditioned for the role of Cameron Frye, but producers turned him down fearing he was too old for the part.

The two men in the funny hats who can be seen when Ferris and his friends are at The Sears Tower were in town on the day of shooting to watch the German Day parade that Ferris goes to later on.

John Hughes personally selected the songs for the film. He wanted them to be somewhat obscure to the typical moviegoing audience, feeling that he wanted everything about the film to feel new. For example, the song heard when the Ferrari is revealed for the first time (and during the final scene) is "Oh Yeah" by Swiss band Yello. The song was not a hit after its first release, but its inclusion in this movie rapidly popularized it, prompting a re-release. It has since been used in dozens of other movies and series, often in scenes featuring a desirable object or person.

Ferris uses the word "finski" when referring to what he gave the parking lot attendant. "Finski" is regional dialect for a five-dollar bill.

In the scene where Sloane is sitting in the taxi with Ferris and Cameron in the floor, Ferris' dad is in a taxi next to them reading the newspaper. As the scene ends you can see the headline "Community Rallies Around Sick Youth", but the wording in the actual article indicates that it was about a Chicago policeman who killed himself.

Paul Gleason was considered for the role of Ed Rooney. Gleason had previously played the role of an assistant principal in The Breakfast Club (1985).

The school nurse who informs Sloane that her grandmother died is named Florence Sparrow, an obvious play on the name of the famous nurse, Florence Nightingale.

Despite the movie being set during the spring, this movie was really shot during the fall of 1985. There are several scenes in the film where you can see the trees are changing colors.

The brief scene of the valets driving the car to the Star Wars: Episode IV - A New Hope (1977) theme was done in post-production.

John Hughes said that he had Matthew Broderick in mind when he wrote the screenplay, saying Broderick was the only actor he could think of who could pull the role off, calling him clever and charming. "Certain guys would have played Ferris and you would have thought, 'Where's my wallet?'" Hughes said. "I had to have that look; that charm had to come through. Jimmy Stewart could have played Ferris at 15...I needed Matthew."

The woman playing the accordion on the parade float was a local named Vlasta Krsek. She gained a degree of notoriety from the film, even appearing on The Tonight Show Starring Johnny Carson (1962). On the show she played and sang the song "Twist and Shout", which was one of the songs from that famous scene.

In an early draft of the script Ferris had two additional younger siblings and Jeanne was to be the middle child.

Although one of the key scenes in the film has Ferris, Sloane and Cameron enjoying a Cubs game at Wrigley Field, John Hughes stated on the DVD commentary that he was not a Cubs fan. The scene was set there because of its iconic status and due to the Chicago White Sox rarely playing day games in 1985 during production.

The address of Ferris' house is the address that was on John Hughes' house when he was a kid.

The Ferrari was originally supposed to smash through the window of the garage and land in the backyard. It overshot its mark, however, and hit a fence that was dividing the house from the yard next door.

There is a theory circulating the internet that Ferris is just a figment of Cameron's mind. The theory states that although Cameron wants to be more adventurous and rebellious, he is afraid to, and so he creates Ferris. Ferris is all the things that Cameron is not. The theory also states that Ferris becomes a creation Cameron uses to finally assert himself against his father's cruelty and, more importantly, his own hypercritical conscience.

Shermer High School is the same high school in Sixteen Candles (1984) and The Breakfast Club (1985).

Ben Stein, who plays the economics teacher in this movie, actually graduated from Columbia University in 1966 with honors in economics.

At one point in the film there was a line that Ferris was going to say about how "come next year, I'll be the first kid to ride on the Space Shuttle". It was even featured in the preview for theaters. However, less than five months before the film's release on January 28, 1986, the Challenger exploded 73 seconds after launch due to an O-ring failure in the right SRB, resulting in the deaths of all seven aboard, including New Hampshire school teacher Christa McAuliffe. Because of this, John Hughes had the preview recalled from theaters and the line was edited out of the final film.

Shooting began in Chicago just after the Labor Day weekend, on Monday, September 9, 1985. In late October of 1985, the production would move to Los Angeles.

The scene in which Ferris is drawing the nude woman on his computer was going to be broadcast onto a jumbotron in Chicago but the scene was later cut.

Ranked at #10 on "Entertainment Weekly"'s 50 Best High School Movies (2006).

After the girl in the arcade spits her soda on Ed Rooney, a video game sound effect is heard in the background. Appropriately enough, it's the sound effect that denotes when a player has lost a life in Pac-Man (1980).

In the scene where the kids are exploring the art museum, the music playing is an enhanced instrumental version of "Please Please Please Let Me Get What I Want" by The Smiths.

Charlie Sheen's role in this movie was filmed on one of his days off from the film Lucas (1986). His role came up mid-shoot.

The scenes shot at Cameron's house began in September 1985 and finished in October of that year. The scene where the Ferrari was crashed was shot in mid-October. In order to have continuity and depict the garage scenes as the end of the school year, all of the leaves on the nearby trees were painted green. There is one scene after the Ferrari goes through the glass and the camera is down in the ravine looking up at the three actors standing in the garage looking down through the missing window. In the pane of glass next to them you can see reflections of distant trees which are yellow/orange as the fall colors were in full force by the time the scene was shot.

Although Charlie Sheen used tricks such as sleep deprivation to look the part of his character 30 years ago, he did not feel it necessary to alter his appearance or personality to play the role in the recent The Goldbergs (2013)' homage to "Ferris Bueller" in the "Barry's Day Off" episode.

According to the original script, Sloane has a brother and her father left the family for a twenty-five year old bimbo.

The house used as Cameron's home has four bedrooms, four bathrooms and is 4,000 square feet. It was designed in 1953 by A. James Speyer and David Haid.

This entire movie takes place in one day with no flashbacks and most of the characters wear the same clothes throughout the whole movie.

When Ferris picks up Sloane from school, they are standing in front of the entrance to the theater of Glenbrook North High School in Northbrook, IL, director John Hughes' alma mater They then drive the car past the high school's soccer and baseball fields.

Cameron is wearing a Gordie Howe Detroit Red Wings jersey. Howe was famous for playing professionally until he was in his early 50s, from 1946 until his retirement in 1980.

Sloane was originally named "Tandy" in earlier drafts of the script.

Sloane is named for Sloane Tanen, daughter of then-Paramount head Ned Tanen.

Ben Stein was exceptionally moved by the film, calling it "the most life-affirming movie possibly of the entire post-war period". "This is to comedies what Gone with the Wind (1939) is to epics", Stein added. "It will never die, because it responds to and calls forth such human emotions. It isn't dirty. There's nothing mean-spirited about it. There's nothing sneering or sniggering about it. It's just wholesome. We want to be free. We want to have a good time. We know we're not going to be able to all our lives. We know we're going to have to buckle down and work. We know we're going to have to eventually become family men and women, and have responsibilities and pay our bills. But just give us a couple of good days that we can look back on."

During the downtown parade scene they pass a theater playing the movie Godzilla 1985 (1984). Matthew Broderick would go on to star in the movie Godzilla (1998) in 1998.

Included among the "1001 Movies You Must See Before You Die", edited by Steven Schneider.

Cameron wearing a Detroit Red Wings hockey jersey is actually an insight to his character. For the last 20 years or so, the Red Wings have been a top team in the NHL. However, back during the time this film was made, the Red Wings were the worst in the league with an embarrassing win/loss record. Cameron wore a Red Wings jersey to show that not only is the character "a lovable loser down on his luck" but that even the team he supports are losers. The Red Wings have also been long time rivals to the Chicago Blackhawks.

The name of the detective Ferris' mother talks to when picking up Jeanie is Stephen Lim (the name can be seen on door when mother exits office.) This is also the name of First Assistant Director Stephen Lim,

In Ferris' bedroom there is a poster for 'Don't You (Forget About Me)' by Simple Minds, the same song used in the beginning and the end of one of John Hughes' previous films, The Breakfast Club (1985).

The Ferrari in the movie was a replica of a Ferrari 250GT California Spyder (only 104 of which were actually produced). This version of Ferrari's already famous 250 series was designed specifically for the American market, featuring only two seats, a convertible top and more horsepower than in the standard European version.

Ferris's sampler/synthesizer is an E-MU Emulator II.

Tom Skerritt was considered for the role of Ed Rooney.

The passage that Ed Rooney quotes when he is trying to console Sloane ("man that is born of woman hath but a short time to live...") is the "First Anthem" for the Burial of the Dead from the Book of Common Prayer produced by the Anglican church. The anthem is based on Job 14:1-2.

A theory arose that Ferris doesn't actually exist and he is just a more outgoing, brave alter-ego of Cameron that he made up to deal with his father. This begs the question: Was the whole day just Cameron day dreaming in his bed while sick?

The parade scene took multiple days of filming; Matthew Broderick spent some time practising the dance moves. "I was very scared", Broderick said. "Fortunately, the sequence was carefully choreographed beforehand. We worked out all the moves by rehearsing in a little studio. It was shot on two Saturdays in the heart of downtown Chicago. The first day was during a real parade, and John got some very long shots. Then radio stations carried announcements inviting people to take part in a John Hughes movie. The word got around fast and 10,000 people showed up! For the final shot, I turned around and saw a river of people. I put my hands up at the end of the number and heard this huge roar. I can understand how rock stars feel. That kind of reaction feeds you."

First Lady Barbara Bush paraphrased the film in her 1990 commencement address at Wellesley College: "Find the joy in life, because as Ferris Bueller said on his day off, 'Life moves pretty fast; if you don't stop and look around once in a while, you could miss it!'" Responding to the audience's enthusiastic applause, she added "I'm not going to tell George ya clapped more for Ferris than ya clapped for George."

Mia Sara surprised John Hughes when she auditioned for the role of Sloane Peterson. "It was funny. He didn't know how old I was and said he wanted an older girl to play the 17-year-old. He said it would take someone older to give her the kind of dignity she needed. He almost fell out of his chair when I told him I was only 18."

Linda Blair, Goldie Hawn, Meg Ryan, Ellen Barkin, Kim Basinger, Jamie Lee Curtis, Ally Sheedy, Geena Davis, Robin Duke, Carrie Fisher, Melanie Griffith, Mary Gross, Linda Hamilton, Daryl Hannah, Barbara Hershey, Holly Hunter, Anjelica Huston, Jessica Lange, Kelly LeBrock, Kay Lenz, Julia Louis-Dreyfus, Catherine O'Hara, Madonna, Kelly McGillis, Michelle Pfeiffer, Cybill Shepherd, Meg Tilly, Sigourney Weaver, Jodie Foster, Sharon Stone and Debra Winger were all considered for the role of Jeanie Bueller.

Cameron Frye's birth-date is 1 July 1967. Alan Ruck's birth-date is 1 July 1956.

Kristy Swanson was originally cast in the small role of the girl who talks on the phone with Ferris in the school hall. However, the role was re-cast with Kristin Graziano because John Hughes felt it was better to film the scene in Chicago. Hughes had liked Swanson so much,l though, that he offered her the part of the Economics student, which was shot in Los Angeles.

Originally, the Modigliani that Ferris is tinkering with on his computer was wired to a Jumbotron downtown.

The car parked to the left of the Ferrari in the garage is an MG J2 (the Ferrari is actually a fiberglass body of a Ferrari on an MG chassis).

Director John Hughes didn't like Ferris' beret when he is driving the Ferrari, but he really liked Cameron's flat cap.

In the scene where Ed Rooney is at Ferris' house, before he rings the doorbell he is humming the same song that Ferris sings in the shower at the beginning of the movie.

Louie Anderson had a small role as a flower deliveryman in this film. One of the episodes of his 1995 television show, Life with Louie (1995) was titled "Pains, Grains and Allergy Shots," a reference to the John Hughes film Planes, Trains & Automobiles (1987). Anderson's TV show also featured the voice talents of Edie McClurg, who is notable for appearing in many of Hughes' films, including this one.

Alan Ruck, then 29, worried about the age difference. "I was worried that I'd be 10 years out of step, and I wouldn't know anything about what was cool, what was hip, all that junk. But when I was going to high school, I didn't know any of that stuff then, either. So I just thought, well, hell-I'll just be me. The character, he's such a loner that he really wouldn't give a damn about that stuff anyway. He'd feel guilty that he didn't know it, but that's it." Ruck wasn't surprised to find himself cast young. "No, because, really, when I was 18, I sort of looked 12", he said. "Maybe it's a genetic imbalance."

The high school band playing in front of the float Ferris is on is a real high school band from Lockport Township High School, a small town just south of Chicago.

During the scene at the Sears tower, Ferris says it's the World's Tallest Building At the time of filming, the Sears tower was NOT the tallest building in the World, that title went to the CN tower in Toronto Canada.

Eric Stoltz auditioned for the role of Ferris.

The bus scene at the end of the movie where Dean Rooney is picked up was shot in Long Beach, California, at Los Cerritos Park.

Ferris has a Cabaret Voltaire "Micro-Phonies" poster to the left side of his door.

As he was writing the film in 1985, John Hughes kept track of his progress in a spiral-bound logbook. He noted that the basic storyline was developed on February 25. It was successfully pitched the following day to Paramount Studios chief Ned Tanen. Tanen was intrigued by the concept, but wary that the Writers Guild of America was hours away from picketing the studio.

John Hughes intended the movie to be more focused on the characters rather than the plot. "I know how the movie begins, I know how it ends", said Hughes. "I don't ever know the rest, but that doesn't seem to matter. It's not the events that are important, it's the characters going through the event. Therefore, I make them as full and real as I can. This time around, I wanted to create a character who could handle everyone and everything."

Alan Ruck had previously auditioned for the Bender role in The Breakfast Club (1985) which went to Judd Nelson, but John Hughes remembered Ruck and cast him as the 17-year-old Cameron Frye.

Jeffrey Jones was cast as Rooney based on his role in Amadeus (1984), where he played the emperor. John Hughes thought that character's modern equivalent was Rooney.

According to Matthew Broderick, Ferris's singing "Danke Schoen" in the shower was his idea. "Although it's only because of the brilliance of John's deciding that I should sing "Danke Schoen" on the float in the parade. I had never heard the song before. I was learning it for the parade scene. So we're doing the shower scene and I thought, 'Well, I can do a little rehearsal.' And I did something with my hair to make that Mohawk. And you know what good directors do: they say, 'Stop! Wait till we roll.' And John put that stuff in."

Mia Sara almost didn't play Sloane because at the same time she auditioned, she was simultaneously auditioning to play Sarah in Labyrinth (1986).

This is former U.S. Vice President Dan Quayle's favorite movie.

Cameron wears Gordie Howe's Red Wing jersey #9, which is also the number of days Ferris has already skipped school.

The poster behind Ferris Bueller's bed is of Bryan Ferry.

When the trio is back at Cameron's house, attempting to push the mileage back, nearly four minutes pass between Ferris saying,"We'll have to break the glass on the odometer and roll it back by hand" and after the Ferrari speeds through the glass to the foliage down below when Ferris says "You killed the car." During Cameron's rant about his problems with his father, neither Sloane nor Ferris say anything or make any sort of noise. Neither makes a sound, such as a scream, even when the car goes out of the window.

The license plate says on the red Ferrari NRVOUS.

John Hughes wrote the screenplay in less than a week, as his logbook notes: "2-26 Night only 10 pages ... 2-27 26 pages ... 2-28 19 pages ... 3-1 9 pages ... 3-2 20 pages ... 3-3 24 pages."

Alan Ruck and Matthew Broderick had previously acted together in the Broadway production of Biloxi Blues. Cameron's Mr. Peterson voice was an in-joke imitation of their former director Gene Saks. Ruck felt at ease working with Broderick, often crashing in his trailer. "We didn't have to invent an instant friendship like you often have to do in a movie", said Ruck. "We were friends."

According to John Hughes, the scene at the Art Institute of Chicago was "a self-indulgent scene of mine-which was a place of refuge for me, I went there quite a bit, I loved it. I knew all the paintings, the building. This was a chance for me to go back into this building and show the paintings that were my favorite." The museum had not been shot in, until the producers of the film approached them. "I remember Hughes saying, 'There are going to be more works of art in this movie than there have ever been before,'" recalled Jennifer Grey.

Matthew Broderick's dance moves were choreographed by Kenny Ortega (later, of Dirty Dancing (1987) fame). Much of it had to be scrapped though as Broderick had injured his knee badly during the scenes of running through neighbours' backyards. "I was pretty sore", Broderick said. "I got well enough to do what you see in the parade there, but I couldn't do most of Kenny Ortega's knee spins and things like that that we had worked on. When we did shoot it, we had all this choreography and I remember John would yell with a megaphone, 'Okay, do it again, but don't do any of the choreography,' because he wanted it to be a total mess." "Danke Schoen" was somewhat choreographed but for "Twist and Shout", Broderick said, "we were just making everything up". John Hughes explained that much of the scene was spontaneously filmed. "It just happened that this was an actual parade, which we put our float into-unbeknownst to anybody, all the people on the reviewing stand. Nobody knew what it was, including the governor."

John Hughes had originally wanted to film the Wrigley Field scene at the baseball game at Comiskey Park, as Hughes was a Chicago White Sox fan. However, due to time constraints, the location was moved to Wrigley Field at the last minute.

Charlie Sheen said a few years later that watching his one scene in the movie made him want to punch himself in the mouth.

John Hughes had wanted to film a scene from the script where Ferris, Sloane, and Cameron go to a strip club. Paramount executives told him there were only so many shooting days left, so the scene was scrapped.

No official soundtrack was ever released for the film, as John Hughes felt the songs would not work well together as a continuous album. However, according to an interview with Lollipop Magazine, Hughes noted that he had sent 100,000 7" vinyl singles containing two songs featured in the film to members of his fan mailing list.

According to Alan Ruck, the reason Cameron wears a Gordie Howe Detroit Red Wings jersey is because Cameron had a grandfather in Detroit, whom he had a great relationship with, that used to take him to Red Wings games.

Film critic Richard Roeper named this as his favourite film.

This was the tenth highest grossing film of 1986.

While Paul McCartney admitted that he liked the movie, he personally disliked the Twist and Shout sequence for its inclusion of brass instruments. Upon hearing McCartney's reaction, John Hughes felt bad for "offend(ing) a Beatle. But it wasn't really part of the song. We saw a band and we needed to hear the instruments."

According to editor Paul Hirsch, in the original cut, the museum scene fared poorly at test screenings until he switched sequences around and John Hughes changed the soundtrack.

Jeffrey Jones recalled, "My part was actually quite small in the script, but what seemed to be the important part to me was that I was the only one who wasn't swept along by Ferris. So I was the only one in opposition, which presented a lot of opportunities, some of which weren't even in the script or were expanded on. John was receptive to anything I had to offer, and indeed got ideas along the way himself. So that was fun, working with him. Hughes told me at the time - and I thought he was just blowing his own horn - he said, 'You are going to be known for this for the rest of your life.' And I thought, 'Sure'... but he was right."

The restaurant where Ferris etc. go to eat is the same one Jake and Elwood terrorised in The Blues Brothers (1980). It is also the same restaurant from St. Elmo's Fire (1985), where Kirby waits for Dale

The ska-pop group "Save Ferris" got their name from the words on the water tower in this movie, a favorite of theirs. The band Rooney is named after the principal in the movie, Ed Rooney. They were called the Ed Rooney Band before dropping it to just Rooney.

In order to keep the savage rottweiler focused on Ed Rooney, John Hughes had Jeffrey Jones carry a raw steak around in his jacket pocket.

Despite his frequent absences, Ferris is actually an excellent student. During the scene where Mr. Rooney calls Ferris's mother to report on Ferris's absence, his transcript is shown on a computer screen. For his Senior year, Ferris is enrolled in English Composition, Calculus, Chemistry, Gym, Computer Science, Utopian Society, and European History, attaining an A, A-, A, A-, A, A, B+ respectively in the previous semester. This makes his GPA 3.814. By skipping school, Ferris misses a test on European socialism for European History, his "worst" subject.

The script of Ferris Bueller's Day Off (1986) took a mere 6 days to write.

The detective's name is Steven Lim. The film's first assistant director is also named Stephen Lim.

Apparently it is just not Ferris and his pals that skip school. Two girls who look the same age as Ferris are seen playing an arcade game at a restaurant. If you look carefully during the baseball match a blonde haired boy who looks no more than 8 years old is behind Ferris and his pals.

There are two region-specific items of clothing in the film. The Detroit Red Wings jersey and a letter jacket. The letter jacket is from a school in suburban Detroit - Birmingham Groves High School.

Matthew Broderick has also played a young whiz kid in the film WarGames (1983).

The squeak made by Ferris's finger as he runs it down the car was actually made by a female crew member.

Shia LaBeouf was born on the day this movie came out: June 11, 1986.

John Hughes: can be seen in a tiny cameo in one of the early Chicago downtown montage sequences, climbing literally across traffic, from right to left of screen, wearing a light blue jacket and big "'80s hairdo" (from DVD director's commentary.)

John Hughes: [The Beatles] Ferris lip-syncs The Beatles' cover of "Twist and Shout". He quotes John Lennon's song "God" ("I don't believe in Beatles, I just believe in me.") Cameron's Detroit Red Wings jersey references Paul McCartney and Wings, as his Epiphone Texan acoustic guitar (which he played on The Beatles' "Yesterday") sported a Detroit Red Wings sticker from the mid-1970s onward. During filming, Hughes "listened to The White Album every single day for fifty-six days".

John Hughes: [Shermer] When Jeannie is in the police station, you see a quick shot of the chest of a police officer including his badge which identifies him as a Police Officer in the town of Shermer.

John Hughes: [eyes] close-up of eyes widening in horror.

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