Complex sentence: Froom has taught at the University of Utah, the Peabody Institute and the University of Maryland, College Park, but has been on the faculty at St. Mary's College of Maryland since 1989.
Split into simpler sentences: Froom has taught at the University of Utah, the Peabody Institute and the University of Maryland, College Park. He has been on the faculty at St. Mary's College of Maryland since 1989.