The Federal Probation Office and the Board of Judges for the Eastern District of Pennsylvania initiated a pilot reentry court program, called the Supervision to Aid Reentry (STAR) program in 2007. The impact evaluation used a quasi-experimental research design to compare the reentry success of the first 60 STAR participants to a matched comparison group of 60 probationers in the 18 months postrelease. While logistic regression results indicated that STAR participants were no less likely to be arrested than the comparison group, STAR participation was associated with a significant reduction in the likelihood of supervision revocation. With insight from a previous process evaluation of the STAR program, implications of these findings for the STAR program and other reentry programs are discussed.