Continuity mistake: In the very beginning of "Go My Own Way," Gabriella starts to turn away from Troy twice; once in a shot from over Troy's shoulder and again when it is a side shot of the two of them.
Continuity mistake: During the final dance scene, "All For One," the sky in the background constantly changes from blue and cloudless to overcast.
Continuity mistake: During "Everyday" Troy's microphone keeps switching hands.
Continuity mistake: During "Work this Out" you see a girl pass by Taylor during the line "I don't remember you saying the boss is such a creep". The next shot you see the same girl move by closer to Taylor.
Continuity mistake: Troy's hair constantly changes throughout the movie.
Continuity mistake: During "What Time Is It" Jason is laying his head on his desk. His arms are change between shots.
Answer: It is just a coincidence. Corbin's character is all about sports and feels that Ryan is not in the same league when it comes to baseball (pardon the pun). Ryan, on the other hand, wants to prove that dancing takes just as much athleticism and dedication as sports therefore the game and song are a showdown between two cliques you generally find in high school, the athletes and the drama club.