Using longitudinal data, this analysis: (1) documented educational outcomes for serious offending girls, and (2) identified risk and protective factors associated with academic achievement in mid-adolescence and degree attainment by early adulthood. In mid-adolescence, girls performed nearly one standard deviation below the population mean on academic achievement tests. Low IQ and special education needs were strong correlates of poor academic achievement, but living in a highly educated neighborhood was associated with higher academic achievement scores. By early adulthood, 62.7% of girls had received a General Educational Development (GED) or high school degree, and mid-adolescent academic achievement was the strongest predictor of degree attainment. Results suggest a need for early academic intervention targeting individual and neighborhood factors among offending girls.