Painting the Current Picture: A National Report Card on Drug Courts and Other Problem Solving Court Programs in the United States, Vol. I, No.

http://www.ndci.org/publications/paintingcurrentpicture.pdf

released by the White House Office of National Drug Control Policy (ONDCP) and the National Association of Drug Court Professionals (NADCP).
"The first-ever report card on the effectiveness of drug courts finds that the courts increase access to drug treatment, reduce criminal recidivism, and save states and local municipalities money."