The Thornton-Donovan School (TD) was founded as the New Rochelle School and Kindergarten inNew Rochelle, New York. It was founded by Judge Martin Jerome Keogh in 1901.[citation needed] The first teacher and headmistress was Miss Emily Thornton, a Philadelphia native educated at University College Nottingham, now the University of Nottingham.The current headmaster as of 2009 is Mr. Douglas E. Fleming, Jr.

The school is now at its third campus, on Overlook Circle in the Beechmont neighborhood of New Rochelle. It inhabits three former homes, including the former Andrew Crawford estate, now the Main Building.