Fair enough. Assuming the teachers carrying are well trained...I also feel that bad guys need to be stopped before they can get inside the school where an exchange of gunfire can happen around kids. Teachers in classrooms carrying guns are not going to be able to do that so it doesn't make it a viable solution to me. A shootout in a classroom full of kids will likely end up in trajedy...especially when the bad guy entering the classroom already has the weapon drawn and the teacher is still holding a piece of chalk.