Complex sentence: Katz graduated from the The High School of Music & Art in New York City with an art major in 1956, and went on to study at Antioch College, the City College of New York, The New School, and Hunter College.
Split into simpler sentences: Katz graduated from the The High School of Music & Art in New York City with an art major in 1956. Katz went on to study at Antioch College, the City College of New York, The New School, and Hunter College.