Deahl's teaching focuses on leadership, ethics and organizational systems and dynamics. In addition, his academic and professional work focuses on adult learning pedagogy, programming and research as well as understanding and applying the dynamics of leadership excellence.
Deahl was a member of the religious studies departments at the University of Alberta in Edmonton, St. Norbert College in De Pere, Wis., and Alverno College in Milwaukee from 1985-92.
He has been a charter grant fellow at the National Center for Adult Learning in Saratoga Springs, N.Y., since 1990, recently chaired the National Commission for Accelerated Programs and serves as a charter member of its Executive Planning Committee.
He is also a past president of the Milwaukee Council on Adult Learning, a member and past coordinator for the Wisconsin Association of Independent Colleges and Universities Faculty Development Network, a member and active presenter for LERN, the College Board, the American Association for Higher Education, the Council on Adult and Experiential Learning, the Association of Adult and Continuing Education and The Alliance, and a member and past president of the Association of Jesuit Colleges and Universities Deans of Adult and Continuing Education.
At Marquette, Deahl has served as a member of the Core Curriculum Review Committee, the all-University Assessment Committee, and the University Renewal Task Force. He chaired the Distance Learning Task Force in 1995-96. Deahl currently serves on the Office of International Education Faculty Advisory Council as well as the Steering Committee for the Center for Peacemaking.
Deahl earned a bachelor's degree in theology and philosophy, summa cum laude, from St. Francis Seminary College in Milwaukee. He completed a licentiate in sacred theology and a doctorate in sacred theology, magna cum laude, at Pontifical Gregorian University in Rome from 1976-82.
He also completed studies at the Hebrew University in Jerusalem as well as studies in Paris; Cape Town, South Africa; and Boston College.
Deahl is currently involved in project work through the Woodstock Theological Center at Georgetown University, Washington, D. C., and he directs the Project for Community Transformation through the college.