As an (insert counrty you like to shit on here) person, I only remember violent gunman drills specifically. We would all be instructed to hide in a corner(s) not visible from the hallway, and to stay dead silent, while the administration staff knocked on the doors and didn’t do the “all OK” actions.

Funnily enough, my suggestion we “grab a knife or knifey object and we’ll bum rush the fucker” NEVER went over well, for some reason.