Saint Ann's School, a private institution in Brooklyn Heights, obtained a building one block from its main facility to house its Lower School, grades 1, 2 and 3, as a complete, independent facility. In addition to 12 large classrooms it has its own gym, library, cafeteria, music and art studios and administrative offices.

Spaces were arranged in response to programmatic requirements while working within the existing building configuration. The gym was located on the top floor by rebuilding the roof for optimum ceiling height and column free space. Provisions were made for access to a future rooftop play area.

A central spine leads from the main entry and splays open to a lobby at the rear giving access to the elevator, an open stair down to the cafeteria, both stair towers and a Music Studio/Performance Space. An undulating panel on the west side acts as a soft and playful counterpoint to the metal and glass east wall that opens into the Library.

Upper corridors were designed as central "Foyers", rotated 45°, and made large enough to be used as program spaces. Classrooms are non-traditional and have movable partitions so that they can be split for smaller group instruction. The lighting design is extremely energy efficient as well as low maintenance, maximizing flexibility in lighting levels without the use of dimming systems.