For an edgy social commentary on school violence... this is a pretty fucking good game.
The controls are very good. Movement isn't very tight, but that isn't necessarily a bad thing. I would say that the movement SPEED is a bit frustratingly low (-1/2 stars). Shooting is satisfying, from the sound effect to the death animations. The bullet speed is good, not much to say there.
I like the idea of increasing difficulty, from normal, helpless students, to campus officers who can only charge at you, to cops who charge and fire at you, albeit slowly, to swat officers who are crack shots. It makes the game that much more entertaining.
With or without the guilt felt by admitting that a school shooting sim is among my favorite games on this site, I'm giving this 4.5 stars.