That's extremely unlikely. The shooter shot through windows in the side of the school to enter the building.<quoted text>
You forgot a maybe. Maybe if they had an armed guard like the government has in all their buildings, none of this would have happened.
Your comment sounds macabre.
I'll give you that he may have had a chance of interceding before the cops got there, but he would probably have been more likely to get shot. Still if I'm talking about chances, a chance is a chance.
But as an overall strategy, I don't buy it.