Well, whatever, better not miss because I do return fire and I seldom miss.

There may be nothing that can protect schools from things like this because the shooters all seem to want to die and just like suicide bombers these acts are hard to defend against. Even if these guys didn't have guns available they would use something else. Bombs are easy to build and really cheap, tons of people have sword collections, even crossbows can be used. People with the mindset to destroy themselves and others will find a way to do it even if they don't have anything available but a car.