Carpenter claims the progress chart is confidential yet he keeps it in the common room with public access that is shared by 3 student groups instead of his office.
Gersh is in the dorm hall looking at Swanson's TAG Victim Profile and spying on Swanson as he bumbles through the hall to the bathroom. Yet somehow Gersh is already hiding in a toilet stall before Swanson enters the bathroom.
In the second scene Susan ducks as Schooster and Charlie shoot at her thus they shoot and kill one another. Yet on Carpenter's progress chart "S. Swayse" (note the misspelling with an S in place of the Z) is credited with J. Schooster's kill.
Towards the end of the movie in the Campus Security office it is revealed that five students are missing. The missing person report for the last person (Nancy McCauley) is being filled out during Alex's visit. Therefore, there should be four files in the missing person folder that Alex flips through, yet there are only three; Swanson, Holmes, and Wallace. Moreover, when Susan discovers the bodies in Gersh's closet there are only three instead of five.
In the final scene the stair bulkhead on the roof of the building (Kerckhoff Hall) is at the back of the building. Gersh is standing on this bulkhead when he is shot and falls off the building. Thus he should have fallen to the back or side of the building, yet his body is shown lying on the sidewalk in front of the entrance building.
Just after the 34 minute mark you see a boom mic in the center top of the image as Susan and Nancy talks in the class room.