

If you can’t (or won’t) cut down on having firearms freely available, and if you cannot (or will not) do more on the mental health side of prevention, and you have already invented bullet proof whiteboards, doors like battlefield tanks, and implemented a system of metal detector entry checks and maybe deployed an armed guard, then this is an almost good idea. It’s the blinking light in the window and an alarm system sticker on the window that may deter a thief but for school shootings.
I’m not sure about pepper spray. Is a blind shooter unloading their AR-15 magazine an improvement over a fully sighted one? Why aren’t they equipping them with tranquilizer darts? Cross promotion potential for zoos as well.
What are the odds that we get coordinated school attacks and we find out one part-time student at the control center can’t fly 5 drones in 5 different high schools at the same time?

I get she was frustrated. I get this was a joke. You don’t make bomb jokes in line at the TSA either.
She may have overestimated the degree of privacy her DMs had. That’s also on her. Other e2e encrypted services are available to make the crass jokes. But if one of the three recipients had also failed to get the joke, a Signal chat would’ve sufficed to get those deputies showing up as well.
And one shouldn’t expect that a company, even of dwindling importance as Snapchat, won’t do everything in their power to cover their asses. Imagine if this teacher did go amok and they flagged it but did nothing.