The Juvenile Justice Reform and Reinvestment Initiative (JJRRI) was a Vanderbilt University's Peabody Research Institute) and supported demonstration sites in Delaware, Iowa, and Wisconsin.

The demonstration sites implemented strategies that promoted the consistent use of empirically based risk and needs assessments, developed dispositional matrices to inform decisionmaking about levels of supervision and services, and implemented the Standardized Program Evaluation Protocol (SPEP™) to assess and guide improvements in the programs delivered to youth in the juvenile justice system.

OJJDP funded and the Urban Institute's Justice Policy Center conducted a process and outcome evaluation to investigate the implementation of JJRRI, with a particular focus on whether implementing the SPEP™ improved the quality and effectiveness of juvenile justice programming to reduce recidivism and system costs.

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