The cost benefits of providing community-based correctional services: An evaluation of a statewide parole program in California

This was a cost-benefit study of a statewide program involving multiple community-based services for parolees in California. Program effectiveness was assessed by comparing program costs to incarceration costs avoided due to decreases in recidivism. During the first year following parole release, program participants on average stayed out of prison longer than the comparison population. Participants who completed any of the community-based services stayed out of prison substantially longer. The reductions in re-incarceration yielded a net saving of $21 million in incarceration costs over the study period, after the costs of the program and parole supervision were subtracted, or a 47 percent net return on each program dollar invested. This study did not include potential cost savings to other parties in the justice system. These findings suggest future investments in community-based correctional services might produce substantial financial benefits. A fuller apprehension of the potential benefits would benefit from continuing evaluations, including studies employing a true experimental design.