DescriptionYouth in high poverty areas are often at risk for poor mental health and academic outcomes, and have been identified with deficiencies in perceived self-efficacy, grit, and sense of purpose. Youth leadership has been mentioned in the literature as a strategy for building needed skills and attitudes but has not been the focus of much research in the field of school psychology. The present study examined the extent to which participation in a youth leadership program in a school within a high poverty context promoted student competence in self-efficacy, grit and the development of positive purpose. Moderating variables, such as gender, ethnicity, grade level and school performance, also were examined. Results indicated that there were no significant overall differences between student Ambassadors and non-Ambassadors when comparing baseline and post-intervention scores. However, male Ambassadors showed significant gains in purpose and Ambassadors with higher initial efficacy had higher degrees of engagement. Additionally, clear impacts were demonstrated in final interviews with students. This study demonstrates the potential for the impact of youth leadership programming and points to the need for more research in this area.