[This paper examines the marginal contribution of scores on the AICPA level I achievement test and aptitude test for predicting the performance of students in upper division courses. Three performance measures were studied: grades in all upper division courses, grades in upper division accounting courses, and a binary variable reflecting whether a student made a C or below on an upper division accounting course. Results for each of these measures indicated that the AICPA scores did not improve significantly the predictive ability of models that included lower division grades. Several limitations of the study are described.]