Headmasters
- Alan Lake Chidsey, 1946–1966
- Elwood Kimball Salls, 1966–1976
- Thomas Read, 1976–1981
- James R. Maggart, 1981–1991
- E. Philip Cannon, 1991 - 1998 (1991 - 1992 as interim headmaster)
- John Allman, 1998–2009 (followed by interim headmaster Jim Hendrix, 2009-2010)
- Mark Desjardins, 2010-present
Read more about this topic: St. John's School (Texas)