The Corcoran School is an historic school building at 40 Walnut Street in Clinton, Massachusetts. The 2+1⁄2-story brick Colonial Revival building was built in 1900 to a design by Boston architect Charles J. Bateman. The rectangular building rises above a raised foundation to a truncated hip roof with a variety of gabled dormers and two cupolas. The entry is centered on a seven-bay facade, beneath a slightly projecting pavilion that rises a full three stories. The entry is recessed under a large round arch, above which is a portico supported by Ionic columns. On the second level of the pavilion are three long, narrow, round-arch windows with granite keystones above, and on the third level are two rectangular sash windows topped by blind arches.