Residential Re-entry Centers (RRC) are those residential programs operated under contract with the Federal Bureau of Prisons (BOP). The RRCs are based on a social service model, using evidence based curricula, so that the particular needs of the ex-offender population can be met. Although employment is essential, some ex-offenders who have literacy issues cannot compete in the job market. As a result, the RRC is designed to allow certain residents to work on literacy, formal education, vocational education, life skills training, anger management, stress management and employability training. Participation in the RRC program averages from 4-6 months and includes a home detention component. Eligible program participants can go on home detention toward the end of their committment, provided there is a stable and approved home location. The BOP requires that each employed participant help offset the cost of their incarceration by paying up to 25% of their gross income to the RRC. Each RRC operated by BSS is accredited by the American Correctional Association (ACA).