 The school occupies a 316-acre site in Rickmansworth Park.It is a day school for girls 4-18, a boarding school for girls 7-18 and since 2009 also a nursery opened in 2009 for boys and girls aged 2–4.In 1788, Bartholomew Ruspini and nine fellow Freemasons met to discuss plans for establishing a charitable institution for the daughters of Masons who had fallen on hard times or whose death had meant hardship for their families.