Celebrity offspring Rumer Willis has been cast opposite dad Bruce in the upcoming dark comedy The Sophomore. Fellow young Hollywood fav Mischa Barton will play a popular Catholic high school girl who persuades a sophomore reporter to investigate the theft of SAT exams, which eventually reveals a more sinister conspiracy. Rumer Willis plays a troublemaking sidekick to Barton's character, and Bruce Willis will take on the role of the school's twisted principal. The film, previously titled Assassination of a High School President, is a teenage take on the classic film Chinatown.