Both individual and aggregate-level theories suggest that family structure is an important factor related to delinquency. There is evidence that living in a single-parent family increases an adolescent’s risk for delinquency as compared with living in a two-parent family. This study advanced the research in the link between single-parent families and delinquency by exploring the theoretically important relationships through the use of a multilevel design to separate the effects. The data used to examine the individual and contextual effects of single-parent families on delinquency was a sample from the Gang Resistance Education and Training (GREAT) evaluation. Data was used from 35 schools to determine the individual and school-level effects of single-parent families on delinquency. The results suggest independent effects for both living in a single-parent family and attending school where a higher proportion of adolescents live with only one parent. This shows that it matters how many single-parent families a student is exposed to, regardless of whether the student has one or two parents in the home. Future research is recommended. References