High School Musical is a 2006 American television film, and the first in the High School Musical film franchise. Upon its release on January 20, 2006, it became the most successful movie that Disney Channel Original Movie (DCOM) ever produced, with a television sequel High School Musical 2 released in 2007 and the feature film High School Musical 3: Senior Year released to theaters in October 2008. It is the first Disney Channel Original Movie to have a theatrical sequel.