Dr. David Diener began his formal post-secondary education at Wheaton College where he graduated Summa Cum Laude with a B.A. in Philosophy and Ancient Languages. After putting his philosophical training to work by building custom cabinets and doing high-end finish carpentry for an Amish company, he moved with his wife to Bogotá, Colombia, where they served as missionaries for three years at a Christian international school.  

He then attended graduate school at Indiana University where he earned an M.A. in Philosophy, an M.S. in History and Philosophy of Education, and a dual Ph.D. in Philosophy and Philosophy of Education.  He has taught at The Stony Brook School and Taylor University and has served as Head of Upper Schools at Covenant Classical School in Fort Worth, TX, and Head of School at Grace Academy in Georgetown, TX.  He currently works at Hillsdale College where he is the Headmaster of Hillsdale Academy and a Lecturing Professor of Education.  He also is an Alcuin Fellow, serves on the Board of Directors for the Society for Classical Learning and the Board of Academic Advisors for the Classical Learning Test, and offers consulting services through Classical Academic Press.  He is the author of Plato: The Great Philosopher-Educator and serves as the series editor for Classical Academic Press’ series Giants in the History of Education.  The Dieners have four wonderful children and are passionate about classical education and the impact it can have on the church, our society, and the world.