Correctional education aims at challenging the illiteracy, which often leads to delinquency and recidivism. In Greece, little interest had been shown regarding the education of adult inmates, but with the establishment of Second Chance Schools (SCS) inside prisons, a more systematic and integrated effort was made for the overall development of trainees. Many studies have been conducted regarding the work that SCS provides. For this reason, a systematic review of the relevant bibliography and a compilation of the findings of the studies realized between 2006-2018, regarding the benefits of inmates participating in the educational programs, was considered appropriate. The results demonstrate that there are benefits at the personal, educational, and social levels during confinement. After release, the expected benefits are analogous, with the addition of the expectations of the trainees' expectations for social reintegration and professional rehabilitation.