School House and Walls of Oundle School

The School House and walls of Oundle School, built in 1887 by John Sebastian Gwilt, are designed in an asymmetrical Tudor style. An addition was made to the south in 1909 by A C Blomfield. The building is constructed of coursed stone with a slate roof and features stone chimneys.

The main building has two storeys, with the southern section displaying two three-light windows flanking a central three-light window, all under segmental arches and a gable with a finial. The ground floor features three mullion and transom windows of three lights. A string course between the storeys breaks over a coat of arms, and there is a plinth and a parapet. To the left, there is a plain doorway set back with a rectangular dripmould and a window above.

The central section rises to three storeys, with attics and a basement. It has a parapet and three gables with finials, each containing a two-light window. There are seven windows on the first and second floors, arranged alternately with single and two-light windows on the second floor and two and four-light windows on the first floor. The ground floor has six similar windows. A four-centre arched doorway with carved spandrels and a rectangular dripmould leads up to steps.

The right section has two storeys and attics, featuring a gable with a finial and a two-light window. The first and ground floors have windows of six lights, while a larger gable with a finial has two-light windows and two and four-light windows on the first and ground floors. There is a porch to the right, a parapet, and string courses between the storeys.

The stone wall includes a tall arched gateway to the left, topped with an overthrow, a parapet, and a cornice bearing a shield. The southern addition from 1909 is one storey with attics, built of coursed stone with a stone slate roof. The left side has two half-timbered gables, each with a two-light window on brackets above a canted bay of five lights. The ground floor has three two-light windows and a plain door, with a buttress to the right and three stone stacks. The right-hand wing is one storey with six two-light windows. The property also includes a wall of coursed rubble with a rounded top, tall gate piers with ball finials, and iron gates.

All the listed buildings in New Street form a group.