I’ve been putting together a proposal to send to my congressmen and county sheriff that basically suggests we reinstitute the old west posse. Volunteers who would undergo background checks, training, and qualify with their arms. Little or no cost to schools and police departments. With the millions of firearms enthusiasts in the USA, we should be able to find plenty of people to give one day a month to cover a school or after school event.
The killer on this deal will be over-regulation. They will want/demand that you register every weapon you own into some database in case you decide to carry it om campus. Great start to get a good record on who owns what.
My brother and I had the same idea. Volunteers. No cost to the school districts and I would be you would have plenty of people sign-up.