A retired professor who taught for 25 years at Simpson College, Indianola, Iowa, John has earned a BA degree from Culver-Stockton College, an MDiv degree from Christian Theological Seminary, a DMin degree from The University of Dubuque Theological Seminary and a PhD from Iowa State University. John has taught in the Religion Department, the Philosophy Department and the Foreign Language Department. John spent 18 months teaching at Fukuoka Jo Gakuin college in Japan on behalf of Simpson College. John taught logic for over 20 years. He taught from his own textbook for the last six years.