So, two whites go to jail, but the victims are blacks and Hispanics??

You wrote nonsense to give your article a Leftist slant!

1) Every one seems to completely absolve the school of all responsibility. The school counselor wanted the kid gone. Parent’s wouldn’t take him. With the parents there, the school could have gone through the kid’s backpack, locker, whatnot. School didn’t. Instead, the school just sent the kid back to class like, “Oh well, best he get back to solving math problems…”

2) Not going to debate the fact that letting mentally unstable people out in public, let alone get access to firearms, is not really smart. But to play the “What if…” game:
What if the kid took some knives from his home’s kitchen, kills 2 & cuts up a few more? Parent’s still responsible for not locking the knives up?
Say the kid got his driver’s license. Parent’s buy him an older, used automobile. He drives to school and mows down kids getting off a bus. Parent’s responsible for that?

Bottom line: when one lets the deranged/mentally unstable out in public, don’t be surprised if they do deranged/mentally unstable things.