In 1990, the McGill University Senate established regulations governing how multiple-choice exams are to be conducted. The primary rules require multiple-version exams (scrambled question and if possible, scrambled answer positions) as well as assigned seating or seating with alternating rows of students from different courses. In recent years, we have monitored the occurrence of exam-copying with a statistics-based detection program. At present, detectible copying with clear seating correlation is less than 0.1% compared with ca. 5% without any exam controls. (Contains 2 notes.)