I can see you are a champion for the NRA. Besides arming teachers (which is a foolish idea) what policies would you put in place to protect children from mass shooters?
I'll respond to your answer tomorrow; I'm going off the computer for now.
Actually, there are already schools that have armed teachers. I think the better solution is to hire professionals, maybe ex police or military, who have used guns, and have them protect the students. Having an armed guard in the school would offer protection to students. Waiting for the police to show up after a shooting has began, may be too late to save children.
Also, I think schools should have one entrance and exit, unless in an emergency. And, that entrance and exit should have the guard at that place, on the look out for people outside of the building.
Medal detectors is another safety measure that could be used. It would be an inconvenience, but a necessary one.
The NRA has been trashed and I don't think they deserve the criticism. In the case of the Florida shooting, there were two primary groups responsible, besides the shooter himself. Local Law Enforcement, responded to Cruz's home 39 times. That is a huge flag and he should have been in mental health care. Also, the FBI had two opportunities to investigate, but they failed to do that. Had either of these organizations done their job, the shooter would not have been at the school to massacre kids.
The NRA is not responsible for what gun owners do, anymore than car manufacturers are responsible for someone ramming their car into another car, killing the person inside. Most gun owners are responsible citizens who would never shoot kids or innocent people.
There is no perfect solution. Some mentally deranged person will find a way to kill kids, whether in the school or outside in a play ground or in a parking lot.
But, I don't think more strict gun laws or background checks are going to work well. Guns can be purchased on the street, where there are no background checks. Criminals are called criminals because they don't follow the law. So, they will look for ways to go around any laws in place.