Dr. Holbrook's Military School

Saint Denis Institute was said to have occupied the land prior to the school. It was founded in 1864 as Mr. Tracy's School, a seminary for young women on a estate. In 1866, Reverend David A. Holbrook, PhD, purchased the school, turned it into a boys' school, and enlarged it to . It had 60 students. Presidents included Henry C. Pearson (1919–21), Jesse C. Williams (1921–23), Walter H. Eddy (1923–25), and Edward S. Evanden (1925). Walter W. Law gave the club's members (which numbered 200 in 1920) the right to use Briarcliff Manor's 9-hole golf course, the present-day Trump National Golf Club. ==Curricula==

In 1903 the school consisted of six forms, the first two making up the lower school and the remaining four making up the upper school; in the upper school students chose from three curricula: classical, Latin-scientific, or English-scientific. Students received grades for deportment, application, spelling, declamation and composition, church attendance, and skill at military drill, as well as in classes where they learned arithmetic, algebra, French, Latin, German, and Greek. Sports included baseball, football, tennis, hockey, track, athletics, and golf. The school issued a merit roll every four weeks, where students were ranked on conduct, lessons and attendance. ==Notable people==

George Whipple, a physician and pathologist, was a teacher at the school for a year before he started work at Johns Hopkins University. Composer and organist Fannie Morris Spencer was also a teacher. Notable students include Donn Barber, an architect, Nelson Doubleday, a publisher, Edward Avery McIlhenny, a businessman, explorer, and conservationist, John Avery McIlhenny, a businessman, soldier, politician, and public servant, Harold Medina, a lawyer, teacher and judge, and John W. Norton, a muralist and easel artist. ==See also==