There are numerous potential ways to reduce the risk of mass murders at schools. But to the best of my knowledge there is one way that, for all practical purposes, reduces the risk to zero: As I have said before, eliminate the massing of students in one place.
But, since you almost never hear this offered as a solution one must conclude the vast majority of people have something else as a higher priority that stopping these mass murders.
The political left dances in the blood at these events. So, I understand why they aren’t all that serious about stopping them. But what about those of other political persuasions?