Main School, also known as the Suffern Central School District Administration Building, is a historic school building located at Hillburn, Rockland County, New York. It was built in 1912, and is a two-story hollow tile and concrete building covered in stucco and set on a raised basement. The building features Colonial Revival style design elements and orig…Main School, also known as the Suffern Central School District Administration Building, is a historic school building located at Hillburn, Rockland County, New York. It was built in 1912, and is a two-story hollow tile and concrete building covered in stucco and set on a raised basement. The building features Colonial Revival style design elements and originally housed eight classrooms. In 1943, it was the focus of a prominent school desegregation battle, following the overturning of New York State's segregation law in 1938.