By applying multilevel models with random effects, the authors reviewed and synthesized findings from 30 studies that were published in the last 20 years exploring the relationship between the Educational Testing Service Major Field Test for a Bachelor's Degree in Business (MFTB) and related factors. The results suggest that MFTB scores correlated moderately with overall grade point average (0.45) and ACT or SAT scores (0.56) across the studies, before accounting for imperfect reliability or range restriction issues, which supports the claim that the MFTB is a valid assessment tool to gauge information about business-related learning outcomes for a variety of colleges and universities that are similar to those included in the studies.