Tangentially related to the OP...
https://crimeresearch.org/2019/05/m...nt-seen-school-shootings-during-school-hours/
Twenty states currently allow teachers and staff to carry guns to varying degrees on school property, so we don’t need to guess how the policy would work. There has yet to be a single case of someone being wounded or killed from a shooting, let alone a mass public shooting, between 6 AM and midnight at a school that lets teachers carry guns.
https://crimeresearch.org/2019/05/m...nt-seen-school-shootings-during-school-hours/