In the late 1990’s, I worked closely with staff of the Partnership for Children (PfC) in the Kansas City Metro area. In particular, I worked with Dr Jim Caccamo, the Executive Director, to help him use data to improve the efforts of the PfC to increase immunization rates, develop a large scale youth mentoring initiative, and to develop and implement a social marketing campaign on behalf of children (the #1 Question Campaign). This slide show summarizes the findings of the #1 Question Campaign in terms of leadership, community systems changes facilitated by community leaders, reach of the campaign in terms of health outcomes (immunization rates), and the behaviors of community members in caring for youth. In the presentation of these data, you can see how the community became progressively engaged in facilitating systems improvements (e.g., new and/or modified programs, policies and practices) relating to the campaign, and that it appears to positively affected more engagement in the lives of children as measured by the random digit dial phone survey. It appears that with significant strategic leadership, a community can influence positive youth development through systems change, social marketing of a consistent sticky message, and leveraging relationships for important shared outcomes.