Accrediting bodies, including Association to Advance Collegiate Schools of Business-International (AACSB), require evidence that business schools fulfill their stated missions. This often involves using the Major Field Achievement Test in Business (MFAT-B). In this article, the authors studied MFAT-B performance for its relationship to grade point average (GPA) and to general intellect to determine if the correlations between the variables were significant, given that the test is intended to reflect business knowledge. As expected, business core GPA was a significant predictor of MFAT-B performance. However, contrary to expectations, other GPAs and intellectual aptitude predicted the test scores equally well. Most important, student motivation was also associated with MFAT-B performance, and it enhanced prediction even after the authors accounted for other indexes. (Contains 4 tables.)