Tbf it still may, not for “school” shootings but for active shooter/mass shooter incidents done by adults (like nightclubs, vegas, etc) who have more resources. Unless you just happen to know a CEO it takes some doing to get within range, and some teen stealing daddy’s gun and taking his anger out on his peers in a murder/suicide is A) Just different and B) Probably not financially nor physically able to drop off the grid for a few months and travel a few states to shoot a guy on his way to a business meeting.

Adults unlike kids at least ostensibly have the means and ability, but the crimes are still fundamentally different, really.