This report presents findings from a project in which researchers examined six mentoring programs in Ohio to better understand their impact on recidivism. Youth on parole and probation who received mentoring services were matched with similar youth who did not receive mentoring services. While some reductions in recidivism were found, the differences were not statistically significant. The study looked at six Ohio mentoring programs and their impact on youth recidivism. Research questions explored whether mentoring services were effective in reducing delinquent and criminal reoffending, whether the impact of mentoring services differed based on youth characteristics, the impact of match quality on youth outcomes, and the impact of mentoring program quality on youth outcomes.