High School Musical 3: Senior Year is a 2008 American teen musical film directed by Kenny Ortega and written by Peter Barsocchini. The sequel to High School Musical 2 (2007) it is the third installment in the High School Musical film series and the final installment of the original trilogy, the film follows Troy Bolton, Gabriella Montez, Sharpay Evans, her twin brother Ryan Evans, Chad Danforth, and Taylor McKessie, who are in their final year of high school and face the daunting prospect of being separated as they go off to college. Joined by the rest of their East High classmates, they stage their last spring musical, reflecting their experiences, hopes, and fears about the future.
Source: en.wikipedia.org/wiki/High_School_Musical_3:_Senior_Year