Trinity Evangelical Divinity School (TEDS) is a Christian seminary located in Deerfield, in the U.S. state of Illinois. TEDS is one of the largest seminaries in the world, enrolling more than 1,200 graduate students in professional and academic programs, including more than 150 in its PhD programs. The most popular degree at the school (the Master of Divinity degree or MDiv) prepares pastors, teachers, and missionaries for many kinds of service.