The conceptual model (in explaining the drug court process) seeks to account for the formulation of clients’ beliefs, behavioral intentions, and behavioral outcomes within the context of problem-solving court interventions. Conceptualization of core constructs combines elements of planned behavior theory with those of routine activities theory and acknowledges the transtheoretical model and therapeutic jurisprudence. Systems modeling is offered in an effort to identify specific drug court interventions that work, more accurately select suitable offenders, and promote public safety. A significant problem in the area of drug court research is the absence of an underlying theoretical framework. There are multiple localized efforts to develop a logic model for single jurisdictional application. This policy research paper argues for a systems modeling approach to explain drug court processes. Figure, references