NCCS is a private, independent school for beginners (ages three and four) through ninth grade, located on a 75-acre campus with five academic buildings.

A bus program enables the school to serve families in surrounding communities of Darien, Norwalk, Stamford, Ridgefield, and Wilton, as well as New Canaan.

The ninth grade year is a unique pre-preparatory program that emphasizes teaching leadership and independent thinking skills.

The Stevens Building was opened in September, 2007, with science labs, art studios, and expanded classroom and meeting facilities for use by students in Grades 7–9.

On Earth Day, Senator Judith Freeman presented a proclamation from Governor Jodi Rell in recognition of its being the greenest school building in the state of Connecticut.