Complex sentence: In the early 1960s Todd took a break from St. Bonaventure's to act as the principal of St. Mary's High School, Sukkur and also served as principal of St Francis Grammar School, Quetta.
Split into simpler sentences: In the early 1960s Todd took a break from St. Bonaventure's to act as the principal of St. Mary's High School, Sukkur. He was principal of St Francis Grammar School, Quetta.