This study evaluated the efficacy of a family life education program for stepfamilies that is self-administered, interactive, and web-based. The program uses behavior-modeling videos to demonstrate effective couple, parenting, and stepparenting practices. A diverse sample of 300 parents/stepparents of a child aged 11-15 years were randomized into either treatment or delayed-access control groups. Findings suggest that participation in the stepfamily education program positively influenced several key areas of parenting and family functioning at postprogram and follow-up. No gender differences were noted in the findings.