Origins In 1887,
Sherman Day Thacher moved to the Casa de Piedra (CdeP) orange ranch in Nordhoff,
California (later renamed to Ojai) with his brother, who was seeking a fresh air cure for his
tuberculosis. Thacher's father
Thomas was a professor at
Yale, and in 1889, Thacher's friend
Henry W. Farnam (another Yale professor) asked Thacher to tutor his son for Yale's entrance exams. According to the
Los Angeles Times, Thacher is the oldest private boarding school west of the
Mississippi. At CdeP, Thacher tutored the younger Farnam in both academics and maturity, blending classroom studies with outdoor living and
horsemanship. Soon other friends were sending their sons out to California to receive Thacher's instruction, and a school was born. By 1900, Thacher had educated 45 students, Thacher served as an inspiration (direct or indirect) for various other
college-preparatory boarding schools. His Yale roommate
Horace Dutton Taft visited CdeP in 1889, and Taft's experience helped crystallize his decision to found
Connecticut's
Taft School the following year. Due to the school's popularity, the admissions office was oversubscribed. As a result, Sherman Thacher encouraged Thompson Webb to move from Tennessee to
Claremont, California and establish
The Webb School of California, which opened in 1922. Thacher incorporated the school as a
nonprofit in 1924, but continued running the school until his death in 1931. He was succeeded by Morgan Barnes, who led the school for five years until Thacher's son Anson (CdeP 1923) was ready to take over. Anson Thacher served as head of school from 1936 to 1949, and was the last member of the Thacher family to lead the school.
Horse and outdoor programs When founding the school, Sherman Thacher imposed "the unusual requirement that each student must care for a horse," remarking that "there's something about the outside of a horse ... that's good for the inside of a boy." There was also a practical element to the horse program: "students had to ride the five-mile trek into [downtown] Ojai every day just to pick up the mail." An annual
gymkhana event provides students the opportunity to demonstrate horsemanship in competition. Though Western-style riding is required, the Horse Program offers an
English riding elective in grades 10–12. As part of the Outdoors Program, students are encouraged to take weekend
camping trips into the local mountains, in addition to week-long trips each fall and spring that include
backpacking,
rock climbing,
cycling,
sailing, horse camping,
canyoneering,
backcountry skiing and
kayaking.
Evolution Under Sherman Thacher, the size of the student body was limited to approximately 60 students. Anson Thacher expanded enrollment to 94 boys by the time of his retirement, but the school's primary period of expansion came in the 1960s and mid-1970s; the school educated 189 students by 1975. In 1977, Thacher began admitting female students. The school launched a $160 million fundraising campaign in 2017. In 2020, Thacher further reported that its financial aid budget increased by 50.7% and the percentage of students on financial aid had increased by 5%. The campaign also funded a new academic building and dining hall, improved faculty housing, and a
solar power facility that contributes more than 90% of the school's energy needs. == Admissions and student body ==