The present research examines the developmental outcomes of elementary-aged students engaged in student voice efforts. Using a case study of fifth-grade girls, the authors compare their experiences to research examining secondary school. The authors find marked similarities in the growth of agency, belonging, competence--the ABCs of youth development. The authors also notice two additional dimensions--the need to engage in discourse that allows an exchange of diverse ideas while working toward a common goal. The authors also observed the emergence of civic efficacy, or a belief that one can make a difference in their social worlds. The authors also examine the contexts and conditions that support positive youth development in this case--scaffolding youth learning, establishing inquiry as the framework for teaching and learning, and establishing a clear vision of the school as a place that fosters student voice. (Contains 2 tables.)