In the graduation scene at the beginning, the drummers that are playing snare are playing concert snare drums. The sound heard however is from a marching snare drum which uses a Kevlar drum head as opposed to a plastic drum head that would be used on a concert snare drum.
Throughout several scenes where there is a shot of the drumline, there is a fat black man who appears on A&T's drumline as well on Morris Brown's line and others. This man also appears at the BET Southern Classic on several different lines. Which line is he actually one?
During the first band performance before Sean's solo performance, there is a drumstick on the ground (overhead shot: a foot away from the number 5 on the field). Once they move back the overhead shot to show Sean walking forward starting his solo, the drumstick is gone.
Marching band auditions are held at the end of band camp - traditionally at the end of summer and prior to the school's first football game. During this time, it would be much too warm in Atlanta for one's breath to be visible - even at night.
In one scene, Sean refers to the segment that he will demonstrate as "the part before my solo". This segment is never present before Sean's solo in the upcoming game, though it does resurface in one of the cadences A&T uses to compete in the tiebreaker during the Classic.
When Devon is with his mom after graduation his tassel is to the right. However, part of a graduation ceremony is switching your tassel from the right to the left after you receive your diploma. Therefore, Devon's tassel should have been on the left side because he already received his diploma.