Complex sentence: The young Salinger attended public schools on the West Side of Manhattan, then in 1932, the family moved to Park Avenue and Salinger was enrolled at the McBurney School, a nearby private school.
Split into simpler sentences: The young Salinger attended public schools on the West Side of Manhattan. Then in 1932, the family moved to Park Avenue, and Salinger was enrolled at the McBurney School, a nearby private school.