The Global Early Adolescent Study (GEAS) assesses the formation of gender norms and their relation to health and behavioral outcomes during adolescence. In Kinshasa, the study also evaluates the impact of Growing Up GREAT! (GUG!), a multi-level intervention that works with young adolescents, their families and other community stakeholders to shift norms about society and gender towards improved health. This report outlines the methodology, and cross-sectional and longitudinal findings of the second year of the study.