Related Information for Hsm3High School Musical is a trilogy of films made for young children. The cast include Vanessa Hudgens, Zac Efron, Ashley Tisdale and more. The first film “High School Musical” was not shown in cinemas but the DVD was released on January 20th 2006. It soon became Disney Channel’s most successful movie ever.The sequel “High School Musical 2” was also not shown in cinemas but the DVD was released in early 2007... read more