This document reviews literature on graduation and retention rates of African American students at Historically Black Colleges and Universities (HBCUs). It finds that graduation rates tend to be low at HBCUs, with over two-thirds of students at some HBCUs not completing degrees. The literature identifies several factors that may impact low graduation rates, including poor academic preparation in K-12 schools, lack of economic resources, and insufficient research on psychosocial variables. While HBCUs provide supportive environments, graduation rates are often higher at more selective institutions. Overall, the document finds that improving understanding of predictors of poor graduation outcomes at HBCUs could help address low rates.