Arm the Teachers, Administrators, Secretaries, Janitors, Parents, etc...and the Guard. (if you even need one now) - and Done.
With all that, you will still have some dirtbag doing what dirtbags do but as least you are giving kids a chance to survive.
Instead of huddled victims waiting their turn to be shot. So what if 10 people open up on the dirtbag at once. That's way better than what we have now plus it will make the potential dirtbag double think his strategy before hand. Deterrent anyone?
With all that, you will still have some dirtbag doing what dirtbags do but as least you are giving kids a chance to survive.
Instead of huddled victims waiting their turn to be shot. So what if 10 people open up on the dirtbag at once. That's way better than what we have now plus it will make the potential dirtbag double think his strategy before hand. Deterrent anyone?