LOL. I completely missed that I was implying that all adults had better self control. Some have worse self control than a 6 year old brat.
I would disagree about environment not having anything to do with it. Being in a school offered the kid more protection than on the street, where if he tried to do that to a person not constrained by the requirements of being a teacher, he'd likely have been a different sort of news story with a much more tragic ending.
"I would rather be exposed to the inconveniences attending too much liberty than to those attending too small a degree of it." Thomas Jefferson