The drill should simple be to rush the shooter and get him to the ground, sure he might still kill a few kids but if they do nothing and wait for the cops the shooter will surly kill more than a few.
Then of course the news media gets to talk about heroic kids stopping a gunman and that gunman will face trial instead of getting to blow his own brains out.
Cannot think of a better message to send these wouldbe murderers and I might be considered a bit barbaric for being willing to throw the lives of a few children away for a chance at glory and to send that message to woodbe criminals but the cost is worth it imo.
Besides knowing my kid died a hero trying to prevent the death of others would make me proud, hiding behind a desk waiting to be the next victim not so much.
Besides I remember being in school and little boys can be fearless sadistic little shits, the gunman would most likely be stabbed to death with pencils long before the cops showed up.
Glad to see i'm not the only one thinking fight to survive and protect is better than cower.