First, I doubt if you have any idea what the majority of teachers want. Second, although people went through school, they don't know what is involved in being a teacher...which is part of what's wrong with Legislatures trying to establish rule for schools...they should allow actual educators handle that. And finally I believe that people like you only want to consider a narrow range of options because you only have one true agenda and that is to take away the rights of others to force them to live as you choose.
I have a very good idea what teachers want. I taught for 30 years. I taught during years when we had to do lockdown drills. I have talked to and dealt with more teachers, parents and students than you can even imagine. Once when teaching a community college night class, I was the object of one disgruntled student's plan to kill me; he brought a gun to school to do that, but was discovered before he did anything. I know the danger. My being armed or another teacher being armed would not have been the solution.You are the one who doesn't know what teachers want. You have no idea what the school environment is like.
If I were working in a school that suddenly allowed teachers to carry guns, I'd quit. If I had kids in such a school, I'd remove them. The vast majority of teachers and parents would do the same. The vast majority of schools do not want teachers carrying guns to school.
I have only one goal: to try to keep our kids safe.