Senior year in my high school, a kid who tested at the genius level (me) wrote a thesis on how the lack of parental involvement in bullied kids lives, brings these kids to "fix" things on their own. Recall Columbine? Well, I wrote the paper before Columbine happened. The teacher gives me crap after reading it, saying that my research didn't have any proof. She ate those words two months later.
I fixed it to include some of Columbine, and proved my point even more.
Take it from students and children, not these stupid psychologists, why this sort of thing happens. They'll tell you exactly why. Shrinks just tell you that they'll know more "next time", wanting more money.
Peace,
GermyBoy