The paper discusses the usability of enrolment points achieved based on the results of State Matura exams and points achieved based on high school grades as predictors of study success measured by number of ECTS credits achieved one year after enrolment for students at two faculties. The results of the multivariate analysis indicate that points achieved based on high school grades are a statistically significant predictor for both faculties and points achieved based on the results of State Matura exams for one of the two faculties. Prediction quality of the multivariate model for the analyzed aspect of study success, measured by multiple R-squared, is low to medium.