Trivia: Director John Hughes wrote the script in two days, on July 4-5, 1982.
Trivia: Because of success people thought there would be a sequel, right? Wrong, director John Hughes refused to do another film for two reasons. One was because he and Judd Nelson had a terrible relationship, meaning they hated each other. Also because Molly Ringwald was trying to get out the role of the regular teen girl. Eventually she lost all ties with John Hughes when she started to pursue more adult roles.
Trivia: The original running time of "The Breakfast Club" was about two and a half hours. Thinking the film would not be a hit, Universal Pictures cut the running time down to 97 minutes. The studio then destroyed the negatives of the deleted scenes. Director John Hughes said in a "Premiere" magazine article that he has the only complete copy.
Trivia: Brian's dad is played by director John Hughes.