" In today’s safety culture we seem to swing from strictly monitoring and guiding our children from infancy through high school, and then releasing them to the absolute freedom of college (though some parents are trying to encroach there as well). We have to remember that for most of human history adolescents took on adult roles earlier and rose admirably to the challenge. Many of the problems we have with teenagers result from failing to adequately challenge their growing brains. While we now know that the brain’s decision-making areas aren’t completely wired until at least their early twenties, it is experience-making decisions that wires them, and it can’t be done without taking some risks. We need to allow children to try and fail. And when they do make the stupid, shortsighted decisions that come from inexperience, we need to let them suffer the results. At the same time we also need to provide balance by not setting policies that will magnify one mistake, like drug use or fighting, into a life-derailing catastrophe. Unfortunately, this is exactly what our current “zero tolerance” policies—that expel children from school for just one rule violation—do. "

― Bruce D. Perry , The Boy Who Was Raised as a Dog: And Other Stories from a Child Psychiatrist's Notebook