115 DWI-convicted male inmates were treated with Moral Reconation Therapy during incarceration. Nearly two years after their release, subjects' postrelease arrest records were collected. Treatment group data were compared to a control group of 65 inmates who applied but did not enter treatment as bed space was limited. Analysis showed that 10.4% of the treatment group obtained additional DWI arrests after release compared to 15.6% of the control group. 14.3% of treated subjects received additional sentences compared to 21.5% of nontreated controls. Results were also analyzed for a group of 24 treated subjects who continued to participate in treatment after release. This aftercare group showed a postrelease DWI rate of only 4.2% and reincarceration rate of 8.3%.