The cast from the hit movie series starring Zac Efron and Vanessa Hudgens, would come together again to support a social activist in her web series GimmeMo' Foundation, reported Us magazine.
The private reunion party will take place in LA. But fans can enter to win a chance to join the 'High School Musical' cast in their homecoming party.
The fans would need to donate some money for the fundraiser for winning their chance.
'High School Musical' premiered in 2006. The cast returned one year later for 'High School Musical 2' and later filmed 'High School Musical 3: Senior Year' in 2008.