they have to use good judgement when they let teachers have guns
first, it shouldn't be mandatory - not everyone is skilled with a gun
and, if you don't know how to handle and use one, you have no business carrying it
secondly, there is no training or qualification process
they should at least take a course and get some experience before strapping it on their side
finally, teachers in the US are not always the cream of the crop
many of them went to college and got some mickey mouse degree (something like "art history")
fine - they have a BS or BA, but that doesn't mean they're bright - lol
case in point, a teacher shoots the shitter while she's sitting on it
i don't know that all of them can be trained to own and operate a hand gun