absolutely agree
very few well educated people go on to be violent criminals
maybe there's a case where correlation and causation are a little confused here but I am pretty convinced that the causal direction at least partially goes in that direction
doubt the professors from MIT get together every friday to form fight club, although i'd love to see it if i'm wrong
You are wrong.
It's really about opportunity. People who have less opportunities are told to go make their own. People make them by trial and error as there is no script. People who make their opportunities in just the right way, might get rich or thrive and not go to prison.
But people who can't play a sport, don't have the Phd genius intellect, are supposed to do what? They do what they can and the pieces fall where they fall until they get the opportunity to do better. Educated people (formally) have obtained something, and have something to lose. Accomplished people in general are less likely to want to lose their accomplishments in prison, this can be professional fighters or educated people.