<P> Efron graduated from Arroyo Grande High School in 2006 and was then accepted into the University of Southern California, but has deferred his enrollment to work on film projects . He also attended Pacific Conservatory of the Performing Arts, a community college located in Santa Maria, California, which provided him with the opportunity to perform as a "young player" during the years of 2000 and 2001 . </P> <P> Efron began acting in the early 2000s with guest roles on several television series including Firefly, ER, and The Guardian . In 2004, he began appearing as a recurring character in the first season of the WB series Summerland . For the show's second season, which aired in 2005, he was promoted to the main cast . He also appeared in some films, including the Lifetime television film Miracle Run (2004), for which he earned a Young Artist Award nomination for his performance as one of two autistic twins . </P> <P> Efron's career reached a turning point with the teen musical television film High School Musical (2006), which premiered on the Disney Channel in January 2006 . The film, which has been described as a modern adaptation of Romeo and Juliet, saw Efron playing the male lead Troy Bolton, a high school basketball player who feels conflicted when he finds himself interested in participating in the school musical with Gabriella Montez (Vanessa Hudgens), a girl from the scholastic decathlon team . The film, which also starred Ashley Tisdale, Lucas Grabeel, Corbin Bleu, and Monique Coleman in pivotal roles, became a major success and helped Efron gain recognition among teenage audiences . The film's soundtrack was certified quadruple platinum by the RIAA, making it one of the best - selling albums of the year in the United States . Efron's singing talents were disputed when it was revealed that his voice had been blended with Drew Seeley's on the soundtrack, but Efron clarified that the songs (written for a tenor) were written before he was cast and therefore did not suit his more baritone vocal range . In his subsequent musical films, Efron did his own singing . </P> <P> Efron was next seen playing the role of Link Larkin in the musical comedy film Hairspray (2007), based on the 2002 Broadway musical of the same name . The film became a major commercial and critical success upon its release in July 2007 . Later that year, he was seen reprising his role of Troy Bolton in High School Musical 2 (2007), which aired on the Disney Channel in August 2007 . </P>

Who sang for zach effron in high school musical
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