A specialized system of care for co-occurring clients can be an asset to this population, if the services offered deliver adequate results that contribute to the overall wellbeing of this community. Therefore, providers, including social workers and other professionals to determine the effectiveness of these programs, should routinely assess established programs that are design to meet the most basic needs of co-occurring populations. This will permit an increase the knowledge and understanding of outcomes and perhaps develop alternative resources to connect gaps in the delivery of services. This research evaluated the effectiveness of services that co-occurring clients received from Cedar House Life Change Center. It attempted to understand the correlation between graduation success and other variables, such as length in treatment, mental health and substance use diagnosis, types and frequency of services, and the effects of diverse populations on the treatment outcomes.