The Examen de Admisión a Estudios de Postgrado (EXADEP) test is designed to predict graduate school performance for students enrolled in institutions where Spanish is the language of instruction. In this study, the validity of EXADEP scores for predicting graduate school grade point average (GPA) was evaluated using data from 745 graduate students at the University of Puerto Rico. Predictive validities across fields ranged from r=.11 in education to r=.40 in the Social Sciences. EXADEP scores were somewhat higher for men than women, but EXADEP showed similar predictive validity for both groups. Future studies should consider the incremental predictive validity of EXADEP when college GPA is introduced as a predictor. Future studies should also explore differences in selection and grading process by major to shed light on the limited relationship between GPA and EXADEP for Education majors at this institution.