More than likely but a year or so ago I defended parents of a 9 year old who accidentally shot his friend while playing with his parents' handgun. The kid figured out the combination to the safe it was stored in and accessed the weapon without the knowledge of either parent. The parents were acquitted and found not to be criminally responsible.
I'll be the first to tell you I don't expect that to be the case here but it is truly amazing that everyone has already made up their minds about what occurred when none of us know anything.
I strenuously disagree with you none of us know anything. There is quite a bit we already know in fact.
Using some simple logic we already know certain things:
The child had no self awareness of the danger he was placing himself or his classmates in bringing a loaded weapon into a classroom.
The child was not thoroughly taught or advised that a loaded firearm is dangerous and deadly and absolutely wrong to use either to threaten anyone with using or even worse point at or use on another person!
The child was not properly observed or monitored either upon leaving home or once arriving at school.
The child had poor or no counseling, little or no chastising, none or even less restraining behavior against the use of a firearm. No six year old should ever have any reasonable purpose even being exposed to one, let alone being shown how to use one or more incredibly acquiring one loaded!
The child has little to no morals instruction or common respect for adult authority if he thought it was OK to threaten a teacher with gun violence let alone actually carry out the threat. Those threats were too cavalierly dismissed by teachers and/or those supervising that child.
The child is not self sustaining, therefore the child's home environment is glaringly lacking in basic attention to common sense supervision, training, respect for adult authority, or basic deferential obedience to those responsible for the child's safety, welfare, care, and ultimate behavior.
We know all of these things as a result of the careless, irresponsible, disrespectful, and dangerous behavior the child demonstrated which is a direct result of the overall negligence outlined here. Guess what we also know? At every point in the breakdown of this child's supervision which led to this dangerous and irresponsible behavior, an adult was either dangerously irresponsible or dangerously negligent. We don't need all the actual details behind these observations which have resulted in this destructive behavior but we do know an adult or perhaps even more than one is indeed negligent and therefore responsible.
The facts once investigated will corroborate what we already know. Simple logical common sense.