I just wanted to apologize for my last thread entry. I too easily fall into cynicism and I am actively trying not to in my life, despite all the temptations. That previous entry would only lead the discussion into a pointless direction.
Let me address this it in a different way. There seems to be lots of people (I mean generally, not just on this thread) who advocate for the arming of the average citizen including specifically school teachers. We're not talking about Kabul here, or a Mexican cartel drug town, or some other 4th world hell hole with no civil authority on which you can depend and where citizenship seems to be breaking down, we're talking about modern day United States. Does it not worry you that you think it's a good idea to advocate that little old ladies have to pack iron or that school teachers should be trained in gun combat? Leave aside the question of whether or not that could actually work in practice (you can probably guess how I feel about that), doesn't it worry you that you think this is a good idea or even that you think it's necessary?
What's the end game in this scenario? All citizens walking around with guns at the ready (safeties off?) just in care some bad guy enters the scene, is this what you envisage? Do you honestly think this is a good thing? Is that a place where you want your society to go?