This webinar covers significant recommendations explained in the white paper "Core Principles for Reducing Recidivism and Improving Other Outcomes for Youth in the Juvenile Justice System". "Participants learn about the four principles that must undergird any strategy to reduce recidivism and improve outcomes for youth in the juvenile justice system. Participants also learn how to implement the principles effectively, and hear about how some state and local juvenile justice systems have operationalized the principles in practice." The four principles are: base supervision, service, and resource-allocation decisions on the results of validated risk and needs assessments; adopt and effectively implement programs and services demonstrated to reduce recidivism and improve other youth outcomes, and use data to evaluate system performance and direct system improvements; employ a coordinated approach across service systems to address youth’s needs; and tailor system policies, programs, and supervision to reflect the distinct developmental needs of adolescents. The final part of this presentation, "Translating Theory into Practice" shows how the Oregon Youth Authority uses its comprehensive statewide integrated Juvenile Justice Information System (JJIS) to enhance the agency's decisions through the use of data.