He got a college degree while he was in prison. Next up is law school. https://www.washingtonpost.com/lifestyle/2024/04/23/benard-mckinley-prison-law-school/ Or: https://archive.ph/vKZki
Having worked in prisons--and having managed inmates directly--there are two things that truly rehabilitate inmates: work and education. With female inmates, medical care is a close third. Everything else is a necessity of incarceration, but not necessarily rehabilitative. Work and education. That's the list.