The School Shooting Game That Really Doesn't Have a Name

From the publishers website: They've called you a lot of things over the last three years, and now they're going to pay. You have a semi-automatic rifle and a death wish. They have a detailed building evacuation plan and a history test after lunch. It's schoolin' time. Wander around school mowing down your classmates. Whoever has the most kills at the end of the game wins.