“I’d rather it be concealed carry folks, who’ve passed a better background check than just a 4473 check, and those who can demonstrate the proper proficiency.”
Problem with that is it becomes a race to see how many the shooter can take down before the concealed carry finds the shooter. Teachers carrying is a good step, but is a stop gap measure.
The real solution is lock down while class is in session.
My response was to a call to use retired police/former military. I was simply mentioning that just because someone is former police/military, it doesn't mean they're proficient.
I don't care who is carrying on campus, as long as they've passed the background check and can prove proficiency. If that includes teachers, then so be it. It's the proficiency I'm looking for. Not only must the shooter be stopped, but the person attempting the stop should be proficient enough to not cause additional casualties.