I was lucky. The department of corrections where I did my time provided community college courses. I started by getting my GED then taking basic courses such as writing, math, and social studies. I decided to major in business but changed my major later on to CIS (Computer Information Systems). Managed to accumulate two degrees while in prison: Associate degree in General Studies, and Associate of Science in CIS. The prison system started cutting down on available college courses while I was there. Like I said: I was lucky.
>>andai+vA1
A for-profit prison industry has no interest in solving the problem. See school-to-prison pipeline, where pupils are incarcerated for infractions in school.