Complex sentence: Rev. John W. Donohue was the dean of Thomas More College until 1966, when he returned to the School of Education as an associate professor and Dr. Patricia R. Plante became the first woman dean.
Split into simpler sentences: Rev. John W. Donohue was the first dean of Thomas More College until 1966. Then, he returned to the School of Education as an associate professor and Dr. Patricia R. Plante became the first woman dean.