The recent application of the risk-need-responsivity (RNR) model, in conjunction with core correctional practices, has offered promising results. In the present study, supervision officers were trained in core correctional skills and the RNR model. Supervision officers were randomly assigned to training groups and provided audio recordings of interactions with clients to assess their use of learned skills. The current study utilizes taped interactions between officers and offenders, individual-level offender data, and outcome/recidivism data to investigate the impact of the training regimen, which is the core focus of this paper. Trained probation officers demonstrated greater use of the skills taught during training and their clients had lower failure rates. These findings suggest that providing Staff Training Aimed at Reducing Re-arrest (STARR) training to community supervision officers can impact the officers' use of important correctional skills and improve client outcomes. Abstract published by arrangement with Taylor and Francis.