Treverton Preparatory School and College, situated in Mooi River (Umgungundlovu District Municipality), South Africa, cater to boys and girls of all faiths from Grades 0 to 12 and Post-Matric.

It had been his wish that Treverton continue in perpetuity, but it was "with great sadness and utmost reluctance" that his successor, Douglas Pennington, and the administrators decided to close the school and put the property up for sale in 1961.

Since 1995, it has enjoyed a 100% National Senior Certificate (Matric) pass rate[citation needed] Treverton does not require an entrance examination, but acceptance is dependent on school reports and interviews.

Treverton developed a reputation as a leader in education for sustainable development when it convened a national conference in 1982 at which the Environmental Education Association of Southern Africa (EEASA) met for the first time.

In 2000, a game fence was erected and the Treverton Wildlife Area (TWA) was established as the first natural, wildlife and game area in South Africa entirely managed by school pupils and staff under the guidance of experts in the field.