Horace Mann School (also known as Horace Mann or HM) is a private, independent college-preparatory school in the Bronx, founded in 1887. Horace Mann is a member of the Ivy Preparatory School League, educating students from the New York metropolitan area from nursery school to the twelfth grade. The Upper, Middle, and Lower Divisions are located in Riverdale, a neighborhood of the Bronx, while the Nursery School is located in Manhattan.