I say that we should have two .50-cal machine gun nests in every classroom on either side of the teacher. Predator aircraft making circuits over the school yard. And snipers deployed on nearby roof tops. The teacher parking lots should be protected with a mine field and rumors should be circulated that there is a large take of sharks housed in the sub-basement.
When we start getting beslans here and more massacres and they start calling for gun bans for all, then you'll see what I'm saying.
Of course there could be deterence, but naw.. Lets leave them as the easiest possible targets.