Zac Efron injured his wrist while filming the spinning corridor scene featured in the song "Scream."
Zac Efron repeatedly played pranks on the rest of the cast by throwing water balloons. As payback, the cast toilet papered his trailer and then soaked him with water guns.
If you look closely, you can see all the leads in the movie are wearing matching gold rings with a red stone in it.
During the final performance of "High School Musical," Sharpay does a jazz square while singing, calling back to the first High School Musical film. In an audition, after Sharpay and Ryan perform "What I've Been Looking For," she scolds him for doing an unrehearsed jazz square, to which he replies, "It's a crowd favorite; everyone loves a good jazz square."
With $42 million, holds the record the best opening ever for a movie musical. The former record holder was Mamma Mia! (2008).
Stan Carrizosa: the winner of ABC's summer reality show, High School Musical: Get in the Picture (2008) appears in a music video that is shown over the end credits of the theatrical release of the film. The show's other 11 finalists were featured in the music video as well.