Hebe Catherine Prior was widowed in 1855 at the age of 37. Her barrister husband, John, was riding home from his chambers when he fell from his horse and hit his head. Two days later, he died. She had to find a way to support herself and her ten children, so she sold her home and bought Roxeth Mead, una grande casa in stile georgiano Harrow on the Hill, e vi fondò una piccola scuola.
Her pupils were mainly her own children and the children of masters of Harrow School. To this day, la scuola ancora tra i suoi allievi maestri Harrow’ bambini.
La scuola prosperato e, come l'onorevole Priore cresceva, four of her daughters took over its organisation. The youngest, Florence (conosciuta come Miss Flo), retired in 1932. The school was fortunate enough to pass into the capable hands of Miss Nicholson (conosciuta come Miss Nick), who was its head until she died more than 30 anni dopo.
For some years the school was run by Mrs Eleanor Elgood, followed by Mrs Jean Vernon. Then, in 1982, Mrs Averil Collins divenne il capo, un posto che mantenne per 24 years. During her tenure, the school had to leave the premises that had been its home for 130 years. Harrow School came to the rescue, providing temporary accommodation for 3 years in its sixth form club.
In 1992, by a stroke of good fortune, the neighbouring proberty to the original house called Roxeth Mead, cam onto the market and the school was able to buy Buckholt House, la sua sede attuale.
Mrs Alison Isaacs became its new Head in 2006. Under her leadership, the school continued to flourish, mantenere le tradizioni del passato, abbracciando nuovi sviluppi e guardando al futuro. Mrs Isaacs retired as the Headteacher in July 2018, but remains at the school as a teacher, part-time.
In April 2018 the Proprietors sold the school to Mrs Suzanne Goodwin (the Headteacher of The Hall School, Northwood) who now manages it with her two daughters, Mrs Sarah Mackintosh and Mrs Claire Blunt.