Millbrook School is a private, coeducational preparatory boarding school located in Stanford, New York, United States.

This section does not cite any sources. Please help improve this section by adding citations to reliable sources. Unsourced material may be challenged and removed. (April 2020) (Learn how and when to remove this message)

Millbrook School was founded in 1931 by Edward Pulling. Pulling was a graduate of both Princeton University and Cambridge University, and he taught at Groton School and Avon Old Farms as well as private schools in the United Kingdom. While at Avon, Pulling began to think of creating his own school. His philosophy for a school was heavily influenced by the traditional setting he experienced at Groton and in the UK, as well as the progressive ideology that Avon possessed. After searching for suitable grounds to house the school — including an offer from then Governor Franklin D. Roosevelt to build in Hyde Park, New York — Pulling and his wife decided on the Stephenson farm five miles (8 km) outside Millbrook in nearby Stanford, New York.

After the purchase of the property, Pulling drafted his first board of trustees, which included Endicott Peabody Sr., who was headmaster at Groton, and Henry Harkness Flagler, who became the first President of the Board of Trustees. With the generous support of the Flagler family and Pulling's father-in-law Russell Leffingwell, the campus increased from the original farm buildings to include much of the current campus infrastructure.

Environmental Stewardship is one of the five core values of Millbrook School and the school has contributed in many ways with having Trevor Zoo on campus, building solar panels that will source and generate electricity for the entire campus, and building school's architecture with LEED certification.

Trevor Zoo is the only zoo in the United States that is located inside a high school. The founder of the zoo was Frank Trevor, the first biology teacher at the school. The zoo houses 180 exotic and indigenous animals representing 80 different species, 10 of them endangered. It is accredited by the AZA, the Associations of Zoos and Aquariums. Millbrook students participate with care of the wildlife in the zoo. A curriculum called Zoo community service encourages students to engage in animal husbandry, diet preparation, and veterinary medicine.

This article's list of alumni may not follow Wikipedia's verifiability policy. Please improve this article by removing names that do not have independent reliable sources showing they merit inclusion in this article AND are alumni, or by incorporating the relevant publications into the body of the article through appropriate citations. (April 2020)

• Serena Altschul, journalist, class of 1989
• Francisco L. Borges, Connecticut State Treasurer, class of 1970
• James L. Buckley, U.S. Senator and federal judge, class of 1939
• William F. Buckley, Jr., author and editor, class of 1943
• Schuyler Chapin, Commissioner of Cultural Affairs for New York City, class of 1940
• Frederic C. Hamilton, businessman, class of 1945
• John Dawson, musician, class of 1963
• Alistair Horne, author, class 1943
• Robert Wood Johnson IV, Chairman and CEO of Johnson & Johnson, owner of the New York Jets, and US Ambassador to the United Kingdom, class of 1965
• Nicholas Kazan, writer, producer, and director, class of 1963
• Robert F. Kennedy, Jr. - Environmental law attorney, class of 1972
• David Guy Levy, producer, class of 1999
• Thomas Lovejoy, Conservation biologist, former Director of the World Wildlife Fund, class of 1959
• Josh Newman, California State Senator, class of 1982
• Will Rayman, American-Israeli basketball player, class of 2015
• Christopher Ross, sculptor, designer and collector, class of 1945
• Whit Stillman, writer and director, class of 1969
• Rachel Uchitel, nightclub manager, class of 1992
• Rufus Wainwright, musician, class of 1991

• Official website