All we need are a handful of teachers and staff, its not like we need police or rent a cops, all expenses schools cannot afford. All they have to be is, willing to do some training, have them carry concealed so its not known who is packing. Probably wouldn't need more then a quarter of the people working there to be armed to send a message to the criminal class out there.
"Gun" free zones are truly one of the dumbest and most deadly of the liberal ideas out there. At least people are starting to come around on the stupidity of it.