"The Drug Court model includes a higher level of supervision, particularly by the Court and (generally) a standardized treatment program for all the participants within a particular court (including phases that each participant must pass through by meeting certain goals). There is also regular and frequent drug testing. In contrast, most of the state-mandated program models for drug offenders have less criminal justice supervision (particularly less court involvement) and a less standardized, sometimes more individualized, treatment regimen. In addition, the non-Drug Court treatment model uses drug testing less frequently."

Source

Carey, Shannon M., Ph.D.; Pukstas, Kimberly Ph.D.; Waller, Mark S.; Mackin, Richard J.; Finigan, Michael W. Ph.D. "Drug Courts and State Mandated Drug Treatment Programs: Outcomes, Costs and Consequences," NPC Research (Portland, OR: March 2008), p. I.
http://www.ncjrs.gov/pdffiles…