This...+1
Recruit , train and POST certify volunteers from the community to man security at schools. Expensive to train ...yep. Would also take a process for who to accept. Put real resistance in the schools, all the psychiatrists in the land won't be unable to un-knot this whacked out society.
Yes, lets spend exorbitant amounts of money while we are spiraling deeper into debt. I'd be willing to bet it would be cheaper to provide for more mental health facilities than train and post armed guards at every school in america.