Relationships are important in helping youth, including vulnerable youth, achieve their goals and a transition into adulthood. Having the skills to manage healthy intimate partner relationships can make a difference as youth make decisions related to school, employment, pregnancy prevention, and establishing strong relationships. These skills may be especially important for youth involved in or aging out of the child welfare system. This document reviews the research and evaluation evidence on relationship education for youth in foster care, discusses the needs of disadvantaged young people around intimate partner relationships, summarizes research on the implications of relationships for child development, identifies common ground and also gaps in the research, and identifies opportunities to further improve relationship skills among these disadvantaged young people. For the purposes of this review, the authors sought to focus primarily on relationship education programs that aim to improve romantic relationships among adolescents in foster care. Given the paucity of work on this topic, however, they expanded their review to consider research and evaluation studies among youth outside the foster care system as well as those in foster care. In addition, they have assessed evaluations in related areas, for example, interventions aimed at improving social skills more generally, positive youth development interventions, and pregnancy prevention programs. Appended are: (1) Program Characteristics; and (2) Program Summaries. (Contains 1 table, 1 exhibit and 1 footnote.) [This paper was prepared for the It's My Community Initiative. For "Putting Youth Relationship Education on the Child Welfare Agenda: Findings from a Research and Evaluation Review. Executive Summary," see ED538384.]