The building was constructed in 1603, to house a free grammar school, founded by John Harte, a local man who had served as Lord Mayor of London.
[1][2] The building is constructed of sandstone, with roofs of stone slate and pantile, and a single storey with attics.
The former schoolroom is the main range, parallel to the road, and the master's house projects to the front at right angles.
In the ground floor are mullioned and transomed windows, and in the attic are dormers with sashes.
In the wing is a doorway with a chamfered surround and a sash window, both with hood moulds, and in the attic are dormers.