We present an evaluation of the extent to which an empirically based couples' intervention program was successfully disseminated in the community. Clergy and lay leaders from 27 religious organizations who were trained to deliver the Prevention and Relationship Enhancement Program (PREP) were contacted approximately yearly for 5 years following training to determine whether they still used PREP and which aspects were used. Results indicated that 82% continued to use at least parts of the program, especially parts dealing with communication and conflict management. Results also showed that clergy and lay leaders extended the use of the curriculum from premarital couples to married couples. We discuss implications for future efforts toward disseminating empirically based programs into community settings. (Author abstract) 53 references.