Great video!
In our county we have 10 trained and armed School Resource Officers (SROs) to handle 56 public and 6 charter schools, where their intensive training and communications capability (computers, rapid response teams, etc) is touted as being very effective. Sort of like "Circuit Cops," like "Circuit Judges."
But I don't see why there is such resistance to training and arming volunteer school teachers in the same manner as designated SROs. That is, commissioning them as Peace Officers (Deputy Sheriffs, if you will), and letting them go about their main job of teaching in their particular schools.
It reminds me of the "arming airline pilots" controversy with its mindless "Ohhhh, noes, we can't lets them have GU-UHNSES aboard PLANESES" attitudes some hand-wringing types exhibited.
Terry, 230RN