They should give every student a gun at this point (/s because I feel like someone would agree with me).

Edit: everyone should also wear a bulletproof vest at minimum. Desks should be equipped with reactive armor to defend against anti-tank warheads. A Phalanx C-RAM will be installed on the roof next to the AC units.

All fantastic ideas! I bet you we could get our illustrious U.S. "Department of War" right on that without too much effort spent tryin' to convince 'em.