What are cases and why do business schools use them? How do cases work? How to maximize your learning using case studies. Jim Kayalar, DBA(ABD), MBA is a C-Level executive, management consultant, Professor of business and Internationally published author with over a dozen publications distributed by Aspen Institute, Harvard Business Review, Ivey Publishing, CCMP France, ECCH England, National Chengchi University Taiwan and numerous other publishing houses.