The Selwyn College Preparatory School is an independent, coeducational day school located in Argyle, Texas. Founded in 1957, it covers grades PK-12.
The school has an enrollment of about 300, primarily from Denton, but also from surrounding north Texas towns including Argyle, Aubrey, Corinth, Copper Canyon, Flower Mound, Highland Village and Sanger.
In 1955, Denton Civic Boys Choir School, was founded. But after two years a group of prominent Denton residents, led by John Ross of Moore Business Forms, put together a non-profit group to take over the school.
With a borrowed $100, the school, renamed Denton Preparatory School in 1957, began classes in a building leased from Texas Woman's University. Thirty-three students attended Kindergarten through 9th grade and it had five teachers. Leading that faculty was another Ross recruit: John D. Doncaster, a former English instructor at Southern Methodist University.
Two years later Doncaster led the school to a new location to accommodate the 85 students and the fledgling boarding program. Parents and school community members worked to convert the barns into classrooms and the house into a dormitory.
Then J. Newton Rayzor stepped in. In 1961 Rayzor, a Houston developer and prominent landowner in Denton donated 100 acres (0.40 km2) of land to the school on University Drive west of town. In the fall of that year due to the labor of parents, faculty and students, the school was completed and ready for occupancy. To honor Rayzor, it was named after his daughter, Jeanne Selwyn Rayzor. (1926–1976).
Doncaster's educational philosophy rejected of progressive education favored at that time. His approach was traditional, epitomized by his phrase “discipline and the disciplines."
Over time the school became both a boarding and day school and it gained accreditation by the Texas Education Agency and the Independent Schools Association of the Southwest a regional association of the National Association of Independent Schools. It also gradually added grades, eventually becoming a K-12 institution.