Complex sentence: Professor Schwartz serves on the core faculty of Massachusetts School of Professional Psychology, Harvard Medical School, the Harvard Extension School, and has taught at Wellesley College, the Boston Psychoanalytic Society and Institute, and the Massachusetts Institute of Psychoanalysis.
Split into simpler sentences: Professor Schwartz serves on the core faculty of Massachusetts School of Professional Psychology, and teaches at Harvard Medical School, the Harvard Extension School. He has taught at Wellesley College, the Boston Psychoanalytic Society and Institute, and the Massachusetts Institute of Psychoanalysis.