- The school was established in Kent in 1895 as a girls’ school at Stour House, Sandwich. It adopted the Stonar name when it moved to the larger Stonar House, also in Sandwich.
- In 1920, Stour House School was taken over by three joint heads known as “the Three”. Gladys Crook, Isabel Blackwell and Edith Joslin were pioneering educators with a progressive outlook whose influence endures to this day.
- Stonar offers an equestrian education alongside its academic curriculum. Facilities include an indoor school, an 80m x 40m surfaced arena, four cross-country courses and stabling for up to 65 horses and ponies.
- The school was acquired in 2013 by Globeducate, a subsidiary of the American private equity firm Providence Equity, which operates more than 50 schools in several countries.
- Stonar has accepted boys since 2016, when it became fully co-educational.
Results
A-level 2024 rank: 291=

Grade
%
A*/A
35
A*-B
61
GCSE 2024 rank: 271=

Grade
%
A*/9/8
22
A/7
23
A*/A/9/8/7
45