Louis L'Amour had a good point He noted
in the West, after the Civil War, outlaws who decided to 'tree' a town often were rudely surprised. Almost every man, and a lot of women, had a gun or knew how to use it. This was an effect of the Civil War when people had to have a gun and use it well if personal and corporate safety were to be kept. Even the kids, especially the boys as young as 8-9, of that time were taught about guns and when they were to be used.. A sort of Darwinian culling also occurred. Stupidity got you killed in many different ways but stupidity with a gun got you killed, period.

I didn't get past this line: "....to store police-provided AR-15s in locked gun safes on campus to defend schools against active shooter situations."
If they are going to be locked in a safe there's no point if having them on campus. They're useless.