Almost every teacher in Israel is an IDF veteran because every one in Israel has to serve. American teachers are not cut from the same cloth, so arming them is a nice idea, but not suitable to the current teaching class. Better to take military and law enforcement veterans and pay them to guard schools. Allow qualified teachers to carry in addition.
Do you want this teacher carrying?
https://twitter.com/libsoftiktok/status/1529866883444330507
How about this one?
https://twitter.com/libsoftiktok/status/1529607425434988544
Ok, how about this one?
https://twitter.com/libsoftiktok/status/1528772165855846403
Not every teacher, but every school has some teachers who are capable of handling firearms.
I never owned a firearm until couple of years ago. Never had any formal training. First time I went to a gun range I set the target at 30 feet distance. I fired 25 rounds from 30 feet away. Guess what? Every one of my bullets had landed inside a 6 inch circle. May be because I have broken 80 many times on 18 holes? If I can shoot like that I am positive so can some teachers from schools.
I can disassemble my 9mm and clean it and reassemble it. No formal training needed. Guns are not rocket science.