The Washington State Institute for Public Policy conducted a study to identify evidence-based options to reduce crime and criminal justice costs. The study examined 545 comparison group evaluations of adult corrections, juvenile corrections and prevention programs. The study included two phases. The first phase identified programs that work using meta-analytic procedures to evaluate the evidence.
The second phase determined the cost effectiveness of the programs utilizing their economic model. Some of the more effective programs in terms of results and cost benefit were vocational education in prison, intensive supervision-treatment oriented programs, mentally ill offender programs and educational programs.
This study is the best overview of correctional based programs. The summary on page 9 is user friendly and quickly summarizes available research.
The complete report can be found at: http://www.wsipp.wa.gov/rptfiles/06-10-1201.pdf. It was compiled in 2006.
Please see http://www.wsipp.wa.gov/topic.asp?cat=10 for all available reports.