I highly doubt he learned a thing, except how to survive a gunshot.
He'll wear it like a badge of honor, like all the thugs do now, and use it for street cred.
"Yeah what up punk, I gots shot when I was jus' a little punk, so what you gun' do?"
I can see it now, hopefully next time he'll just get it over with, and someone will finish the job.
I hate to be so crass, but "thugs" like that aren't worth the time and trouble of going to prison, as it sounds like being a JD is the only thing he knows, and is destined for a life of a hardened criminal.