The workshop will discuss the coordinated efforts of two states, Arizona and Connecticut in implementing comparable treatment program outcome evaluations that are the first efforts in the US at developing an interstate process for benchmarking clinical outcomes of state funded treatment programs. This workshop will present analyses of treatment outcome data based on the first year of monitoring for both programs. Implications for practice improvement will be discussed. Additionally, practical issues involved in implementation will be addressed, including strategies for cost effective data management, improving provider compliance, utilization of data for providing clinician and client feedback.