The Youth Level of Service/Case Management Inventory (YLS/CMI) is a structured assessment tool designed to facilitate the effective intervention and rehabilitation of juvenile offenders by assessing each youth’s risk level and criminogenic needs. The present study examined the YLS/ MI’s reliability and validity in a sample of 107 juvenile offenders who were court-referred for mental health assessments. Results demonstrated the YLS/CMI’s internal consistency and interrater reliability. Moreover, the instrument’s predictive validity was substantiated on a number of recidivism measures for both males and females. Limitations of the current findings are discussed