For clients with more severe substance abuse problems, clients in this treatment start by attending two 90-minute groups per week. The first group is psycho-educational in nature and provides clients with curriculum from Phase I of SSC, The Challenge to Change, developed in Denver by Kenneth Wanberg and Harvey Milkman. The second group is process-oriented with psycho-educational components included. It allows the clients an opportunity to practice the skills learned in the earlier week’s group. All clients participate in both groups for a minimum of 12 weeks and then continue attending the process group for an additional 24 weeks. In order to successfully complete this treatment, clients must participate in treatment for a minimum of 9 months.