Agreed Backwoodsman.

Now for me - going forward - it's sad to say that schools in the future will need to be built with secure fences surrounding them. Extra doors in each classroom that be opened from the inside only. With some sort of overide key that will be in the possession of fire departments and the police so they can open them from the outside.

A minimum of entry points with metal detectors at each point. Trained personnel at each entry - perhaps the National Guard? Weapons nearby - but not in plain view. Security cameras at a distance so that security guards can see who is approaching the school.

Basically - schools that are hard to get into and easy to get out of.

Drastic? Yes. And expensive. But better than a school full of dead kids.