Continuity mistake: Troy and other members of the basketball team say that the big basketball game is in 2 weeks, and the scholastic decathlon members say that their championship is in 1 week, but near the end of the movie their championships are on the same day. We know Sharpay couldn't have changed it because all she asked to be changed was the call back date.
Continuity mistake: In the song 'Breaking Free,' Troy's microphone constantly jumps from one hand to the other as the shot changes but too quickly for it to be because he moved it.
Continuity mistake: When Sharpay gets french fries dumped on her shirt, her white under shirt has nacho cheese all over it. But in the next scene when she talks to Zeke, her under shirt is clean again.
Other mistake: When Sharpay is looking for Gabriella in the girls bathroom, she walks past where Gabriella is hiding behind the wall. It is also shown that there is no other room behind that wall. When Sharpay turns around to walk back out, it is impossible that Gabriella couldn't have been seen by Sharpay as she would have been in direct line with her vision. (00:48:45)
Continuity mistake: Troy is running down the stairs to get to the audition, his boxers are blue. However when he says " I'll sing with her", his boxers are now white.
Continuity mistake: Near the end, at the end of "Breaking Free" , Gabriella has the mic in one hand, but in the next shot it's in the other hand.
Continuity mistake: Just as Miss Darbus walks onto the stage to announce the auditions have begun, Troy quickly hides behind the curtain. However, when they cut to a farther back view, the curtains aren't moving.
Continuity mistake: In the locker room, the coach's sandwich goes from his hand to the desk to his hand and switches hands a few times in this scene. It also appears to get bigger and smaller a few times.
Audio problem: During "Breaking Free" (near the end), the audio has both Gabriella and Troy singing the line "You know the world can see us," but Gabriella's mouth does not move until the word "can." (01:29:25)