Since 1990, Hahn has taught at the Franciscan University of Steubenville, where he is the Father Michael Scanlan, TOR, Chair of Biblical Theology and the New Evangelization.
Sejak tahun 1990, Hahn mengajar di Franciscan University of Steubenville, tempat ia dianugerahkan penghargaan Father Michael Scanlan, TOR, Chair of Biblical Theology and the New Evangelization.