Chapel Hill – Chauncy Hall School (CH-CH) is an independent, college-preparatory day and boarding school for grades 8 through PG located on a 42-acre (170,000 m2) campus in Waltham, Massachusetts, United States, and founded in 1828. The school is accredited by the New England Association of Schools and Colleges.

Waltham is a city in Middlesex County, Massachusetts, United States, and was an early center for the labor movement as well as a major contributor to the American Industrial Revolution. The original home of the Boston Manufacturing Company, the city was a prototype for 19th century industrial city planning, spawning what became known as the Waltham-Lowell system of labor and production. The city is now a center for research and higher education, home to Brandeis University and Bentley University as well as industrial powerhouse Raytheon Technologies. The population was 65,218 at the census in 2020.