High School Musical 3: Senior Year References High School Musical 3: Senior Year film by Ortega [2008] Ask Anything Homework Help Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: Zac Efron/ High School MusicalThe final movie, High School Musical 3: Senior Year, was released in theaters in 2008 and broke the box office record for highest grossing musical on opening weekend. Read MoreThe final movie, High School Musical 3: Senior Year, was released in theaters in 2008 and broke the box office record for highest grossing musical on opening weekend. Read More