Complex sentence: The school continued to operate as one school with two campuses some 5 miles apart on opposite banks of the Connecticut River until 2004 when the school consolidated its operations on the Mount Hermon campus in Gill.
Split into simpler sentences: The school continued to operate as one school with two campuses some 5 miles apart on opposite banks of the Connecticut River. In 2004, the Northfield Mount Hermon School consolidated its operations on the Mount Hermon campus in Gill.