The NRA dominates the discussion on this saying "guns don't kill people only bad people do" or "its victim disarmament." Except an owner of a firearm is more likely to die a violent death, including suicide, when factoring everything else out (Stanford University, 2015). The FBI has investigated instances of where a "law abiding citizen" has been there with a firearm in a mass shooting and found only one instance out of 25 where the armed citizen even engaged the shooter. You arm a teacher or a student you will have the same crisis happening. Maybe resolve the source of the problem instead of issuing more firearms to mask it.