Complex sentence: McCulloch graduated from Miss Beard's School in Orange, NJ (now Morristown-Beard School) in 1919 and then completed a bachelor's degree at Wellesley College in 1923.
Split into simpler sentences: McCulloch graduated from Miss Beard's School in Orange, NJ (now Morristown-Beard School) in 1919. She completed her bachelor's degree at Wellesley College in 1923.