J7,

So do it already.

It sounds like you understand that school mass shootings are a statistical outlier of extremely low probability. Because the risk is so low, there are no good, cost-effective, reasonably accepted by everybody kind of solutions that would further reduce that low probability by another 90%. Every teacher and administrator could conceal carry, and that would not prevent the next mass shooting, but more likely than not it would significantly reduce the carnage. But from reading about this on internet forums I've learned that a majority of people, internet types at least, are adamantly opposed to teachers, administrators, and some are even opposed to having commissioned police officers on campus. Good luck.

Sg