Little research in economic education has dealt with MBA programs. The authors investigated student performance in a microeconomics/managerial economics course taught in a one-year MBA program at the German International School of Management and Administration in Hanover, Germany, during the 2002-5 academic years. After controlling for other measurable characteristics, students who spoke English as their native language systematically underperformed in the course. The authors suggest this occurred because these students could have attended similar degree programs in their own countries but instead chose to study in Germany to tour Europe between and even during course modules. (Contains 2 tables, 1 figure and 8 notes.)