In July 2008, the RAND Corporation staff conducted Correctional Program Checklist (CPC) assessments of five home-based service providers as part of its ongoing evaluation of Juvenile Justice Crime Prevention Act activities through the Los Angeles County Probation Department. The objective of these assessments was to conduct a detailed review of the home-based-program services and materials in order to compare current practice with the literature on best practices in corrections. More specifically, these assessments determined whether the treatment interventions were consistent with the research literature on evidence-based practices and the principles of effective intervention. The assessment evaluated each provider's capacity (its capability to deliver evidence-based interventions and services for offenders) and content (substance). Capacity includes leadership and development, staff characteristics, and quality assurance. Content includes offender assessment and treatment. Using structured staff-member interviews and data gathered from representative case files and other relevant program materials, each of these five domains was scored and rated as highly effective (65–100 percent), effective (55–64 percent), needs improvement (46–54 percent), or ineffective (45 percent or less).