Like Coley, I see no simple solutions here. I am okay with having an armed guard, not so much with armed teachers. I do think the guards should be VERY well trained on shooting in a crowded scenario and in a hostage scenario. My concern is we have seen many instances in which trained cops have shot innocent bystanders. The one the comes to mind recently was in Times Square where the cops did get the bad guy, but shot something like nine bystanders.

My other concern is the fact that so many schools sprawl all over the place. In those cases it may take a dozen guards to adequately cover the area. I think our kids are worth the cost, but we need to recognize the coat will be significant and we need to do it right with no corners cut on the training.

Another "solution" I don’t see mentioned too often would be doors that the teacher can lock from the inside. That seems relatively low cost and might help a lot in some situations.

The fact is there is nothing we can do to prevent 100% of these situations.