I would propose senior staff and teachers at all schools be taught proficiency in handling a handgun, and that all classrooms have at least one defensive weapon in it
This just confirms what I have believed for a long time, we are also is dealing with spiritaul warfare here.
I know an extremely fit 51 year old female teacher who cannot assuredly physically control the boys in her class. If they want to walk out the door, she has to let them. They can take her down.... in 3rd grade.
So, if guns are to be in classrooms, we'll need some really good security on them. Finger-print enabled locked boxes, or the like.