School officials assume that such an evacuation would not be orderly and would actually become a panicked stampede. This, many feel, would result in deaths from trampling and possible worse death totals if the stampede heads the wrong way.
I actually think the current doctrine (modified) would work better...if the teacher behind the barricaded door was themselves armed. But, then again, I'm one of those power-crazed gun nut types [note, sarcasm].
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