Why not just equip all of the teachers with 'strongly worded'
"Request That You Stop Shooting - and Be Happy" cards.
Have Hallmark make 'em up.
That should work just fine.
Or just hand out bags of peanuts....
/sarc
That — and the teachers should wear “Gun Free Zone” t-shirts. And put similar stickers on their classroom doors. Problem solved!
I’m not sure AR-15’s with .223/5.56 rounds would be all that appropriate for a school setting. Those rounds could penetrate internal walls.
Wouldn’t .40 SW handguns for multiple trained teachers be a better option? I dunno, just thinkin out loud.
Along that note. What about cops in schools, secured entry points where you enter an area to register your visit w/o being given access until cleared...then through a metal detector.