In no way saying this is related, because we don't have many details right now....but I will say that the public school system contains a large number of students with a history of mental illness and/or violence. I had a student last year who had just been released from a mental hospital. I've had many students with criminal records and many who see a psychologist/therapist on a regular basis. Combine these issues with the short term perspective of a teenager, and the cruel way students can treat each other and you have a potentially deadly situation.