Thanks for the advice guys, I'm currently shopping for a CZ-52, just wish they made one that is easier to conceal.
As to the nature of the threat, let me put it this way, the school where I work is in a town of 1500 people. 8 miles away is town of 12,000 people, in 2010 there were 21 gang related homicides in that town. As I said, the local gangs are in a turf war and it has led to an arms race.
So far the gangs have left my school alone so I'm not worried about Columbine 2.0, the gangs are more concerned with killing each other at this point and I think I"m smart enough to avoid getting caught in the crossfire, but as an Eagle Scout I just want to be prepared.
Moving is our plan of action, problem is as a teacher I can't move before mid June at the earliest, and that's if I can find another job with States cutting education budgets. Hope I can find a job back in my native Idaho, Idahoans don't put up with this gangbanger bull$#*%.
Thanks again guys, the advice has been helpful.