He reportedly crazy for quite some time. Cops called repeatedly. Autistic. Under mental health care. Medicated. Expelled. But I bet it was all because other kids were mean to him.
You seem to have a bug up your rear end about something. You also don’t seem to have much of a clue about how kids are. I never said it was their fault. I wonder how it came to be that he wanted to kill all of them, and then acted to do so. I’m sure it was totally random.