As the population of college-aged Latinas/os grows, the number of Hispanic Serving Institutions (HSIs) increases. The purpose of this study was to determine whether the percentage of Latinas/os has an effect on the institutional graduation rates of Latina/o students attending HSIs, emerging HSIs, and non-HSIs. Data were drawn from the Integrated Postsecondary Education Data System (IPEDS) and the sample included 296 institutions. A structural equation model was used to confirm predictors of graduation rates. (Contains 1 table and 1 figure.)