In his career, Dr. Vastag, a popular and successful instructor, taught a wide variety of courses both in traditional and online setting and ranging from undergraduates to doctoral students. These courses covered the full spectrum of Operations Management (Manufacturing Strategy, Service Operations Management, Operations and Supply Chain Management, Global Supply Chain Management, Total Quality Management) and he also taught International Business both for undergraduates and MBAs. He has also designed, supervised and delivered executive MBA and corporate in-house programs.