Hey, everyone is entitled to their opinion. I think schools are going to have to rethink security and provide it themselves or risk the delays in government showing up later, and ready for blood, long after the blood has begun to flow.
In this case if school security had been able to isolate the kid in the bathroom, at the worst, the teen would have done harm to himself and the school could have said they did everything they could to avoid the classic swat result.
If you think the government reaction isn't an overreaction that's OK I just happen to think otherwise. Once swat gets there you as the school have lost control of the situation, and abrogated your authority. You are nothing more than a spectator on your turf.
I appreciate your point of view. Possibly 'metal detectors' every day for every student? That would hopefully prevent a gun even getting thru the door. But once the kid is in the classroom waving a previously hidden gun, threatening...the school staff have at that moment become helpless 'observers'.