They’re all fake as in “contrived”. Kids and teachers have really died in most cases. I think Columbine was sadly organic, given that the shooters had families and by all accounts nice lives, and that gave the feds an idea. They groom mentally ill young men from broken families, arm them, and set them loose. It’s so much more believable than upper middle class kids from intact families. The Uvalde shooter had no job and couldn’t drive apparently, but drove an F250 to the scene with $6k in weapons and body armor, and knew how to use it?