The Square Schoolhouse stands southwest of the center of Nottingham in a rural setting, on the north side of Ledge Farm Road just southeast of its junction with New Hampshire Route 156.

It is a two-story wood-frame structure, with a gabled roof and modest Greek Revival styling.

The entrance opens into a vestibule area with a central staircase and cloakrooms on the sides, where many original period coathooks remain.

[2] The school was built in 1850 as the first schoolhouse in the town, not long after the state circulated guidelines for the construction of such buildings.

[3] The schoolhouse is now owned by the Else Cilley Chapter of the Daughters of the American Revolution.