Wouldn't it be easiest of all to simply remain silent on the issue of gun possession by school employees and just cite the Second Amendment to the U.S. Constitution if anyone asks why there is no policy against it?
That made clear sense to me, Alberta's Child, for about ten seconds, which is to say: the absence of policy is anathema to government. The very idea of "If it ain't broke, don't fix it" horrifies government individuals.
My hunch is the insurance company or companies are engaging in round-about anti-Second Amendment bigotry, and ought to be rewarded for their attitude with lost contracts. Leftist extremists rarely understand American principles; they do, however, understand dollars.