The Orme School is a private boarding and day college preparatory school for grades 8 through 12 in Mayer, Arizona, USA. It is located along Ash Creek and surrounded by public land and an operating cattle ranch. Its symbol is the "Quarter Circle V Bar", a name once used for the school and cattle ranch. In 1929, it began as a one-room school with seven students from the area's ranches. It enrolls 120 students from 12 U.S. states and 11 countries. The international students comprise more than 40% of the school's enrollment.^[2] Many of the international parents send their students here to master the English language and possibly go to an American college.

In 1929, Charles H. Orme, Sr. and Minna Vrang Orme (inducted into the Arizona Women's Hall of Fame in 1989) left their dairy farm in Phoenix and bought a ranch in the high grassland of central Arizona. Both graduates of Stanford University, the Ormes believed in the necessity of a good education. To educate their three children and those of the ranch employees, they opened a one-room school in an old ranch house.

The school expanded and facilities were added and improved. Charles H. Orme, Jr. became the School's first Headmaster in 1945; he accelerated the growth of the institution when he decided to make the School a college preparatory boarding school. In 1962, the School was incorporated as a not-for-profit institution governed by a Board of Trustees.

The Orme School campus, amidst the ranch, is set on 0.5 square miles (320 acres). The campus consists of the Phillips Library, the Willits Gymnasium, Student Commons, Founders' Dining Hall, the Old Main Administration Building, Buck Hart Horsecollar Theater, Morton Vrang Orme Memorial Chapel, Center for Teaching and Learning, Lecture Hall, Burns Health Center, and seventeen residence halls.

Classrooms include a planetarium, smart classroom, four science labs, a greenhouse, a photography darkroom, a computer center, four art studios, and a music room.

Athletic facilities include the Willits Gymnasium, a lighted football field, baseball, softball, and soccer fields, a lighted rodeo arena, four tennis courts, an English equestrian arena, an outdoor swimming pool, and 100 miles of wilderness riding trails.