Lower income couples tend to report more difficulty sustaining high-quality intimate relationships. As a result, policy initiatives have been enacted to fund relationship education (RE) programs that aim to increase lower income couples' relationship satisfaction. Generally, these programs demonstrate small, albeit statistically significant improvements in mean levels of relationship functioning. It is critical, however, to understand if RE programming influences the developmental course of intimate relationships, and if this influence depends on couples' initial levels of concerns about their relationships. Using dyadic group-based modeling and three waves of data from 6034 couples in the Supporting Healthy Marriages project, a randomized control trial of RE, we categorized couples into four relationship concern groups (No Relational Concerns, Both Relationally Concerned, Men's Relational Concerns, and Women's Relational Concerns) and explored how these groups moderated the longterm efficacy of RE programming. Results indicated that RE was associated with different developmental trajectories of satisfaction, but RE effects differed for men and women. Specifically, random assignment into RE was associated with men maintaining high levels of relationship satisfaction, whereas women's satisfaction decreased over time. These effects were not moderated by initial relationship concerns. The association between RE and relationship satisfaction trajectories was small in magnitude, suggesting that more comprehensive services are needed to strengthen lower income couples' intimate relationships.