This workshop introduces participants to the importance of ongoing data collection and program evaluation in order to improve outcomes for participants. Participants will review relevant research findings from the field of juvenile justice to allow for a deeper understanding of how and why data should drive program decision-making. Trainers will review what standard and routinely collected data shall be collected in juvenile treatment court programs, and will discuss how to remove barriers to effective data collection. The importance of qualitative data collection (e.g. information gleaned from exit interviews) will also be explored.