|Type||Other Independent School|
|Religion||Church of England|
The school dates its history from 1937 when Kenneth Castle took over as headmaster of Lea House School in Harpenden.The school consists partly of day pupils and partly of weekly boarders. The school had approximately 65 pupils at its inception, but has over 300 pupils today (including the Pre-rep).
To date, the school has had only four headmasters:
- Kenneth Castle (1937–1960)
- Brian Chidell (1960–1979; deputy headmaster, 1948–1960)
- Peter Jeffery (1979–2003)
- Vernon Hales (2003 - )
Notable alumni 
- Sir Tim Rice, lyricist. Attended 1950-1956.