This project studied the recidivism rates of Maine sex offenders who were released from prison between 2005 and 2019 and Massachusetts sex offenders released between 2009 and 2018. In total, the Massachusetts cohort was composed of 1,210 offenders, and the Maine study of 905 offenders. Criminal history records were obtained for each offender from their respective states to determine whether the offender recidivated (i.e., committed post-release offenses that resulted in a conviction).