I happen to be a proponent of more safety screening, AND voluntarily armed teachers in schools. We pay teachers to be coaches and advisory for clubs-- easy enough to solicit volunteer teachers and employees to be concealed carry "schools marshals".
The bigger issue that I see with concealed carry teachers is that inevitably a teacher will brandish their weapon, or have to shoot it. How we deal with that is a HUGE issue.
A simple part of that dilemma is that some classrooms will have armed teachers, and others won't. Would you want your student in an armed, or unarmed classroom?
Parents will demand answers to that, as well as demand the right to choose the "armed or unarmed" status of the teacher.
And think of the nightmare that would occur if kids in a classroom with an un-armed teacher were killed by a shooter, but kids in a classroom with an armed teacher fought back and killed the shooter/s. The school would be accused of not providing "equal" levels of security to the kids in the unarmed classroom. Legal and insurance nightmare.
I don't think anyone is suggesting that "all" teachers should be armed, but I do think we should seriously consider a voluntary level of concealed carry in K-12 schools. Right now, with all the "gun free" signs tacked on the doors, they are all sitting ducks for those with murderous intentions, IMO.
** And by "armed", I mean ON their person, concealed, and loaded. Not in a glass or locked box, not unloaded, not in a purse or bag.
I do believe that armed conceal carry "education marshals" would be a HUGE deterrent. I take all those surveys with a pile of salt, because of how they choose to select their survey recipients, and how they massage their categories, questions, and results. The surveys/ polls are not vetted, nor are they scientific. They are a snapshot in time of those who were selected and able to participate. "Convenience sample" at best.