| Haileybury | |
|---|---|
| Location | |
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| , Hertfordshire ,SG13 7NU England | |
| Coordinates | 51°46′43″N0°02′00″W / 51.7787°N 0.0333°W /51.7787; -0.0333 |
| Information | |
| Type | Public school Privateboarding andday school |
| Religious affiliation | Church of England |
| Established | 1862; 163 years ago (1862) |
| Sister school | |
| Department for Education URN | 117607Tables |
| President | Bishop of St Albans |
| Visitor | Archbishop of Canterbury |
| Chairman of the Council | Alan Pilgrim |
| Master | Eugene du Toit |
| Gender | Co-educational |
| Age | 11 to 18 |
| Enrolment | c. 890 pupils |
| Houses | 13 |
| Alumni | Old Haileyburians (OHs) |
| Website | haileybury |
Haileybury is a co-educationalpublic school (fee-chargingboarding andday school for 11-to-18-year-olds) located inHertford Heath, Hertfordshire. It is a member of theRugby Group and enrols pupils at the 11+, 13+ and 16+ stages of education. Over 890 pupils attend Haileybury, of whom more than 550board. The campus occupies over 500 acres (200 ha) of Hertfordshire countryside, approximately 20 mi (32 km) from London.
Haileybury was judged 'Excellent in all areas' in its 2022 Inspection Report by the Independent Schools Inspectorate (ISI).[1]
In 2022, 90% of A-Level/IB grades were awarded at A*-B, or the equivalent.[2]
In 2023, the school saw 43.9% of its candidates score A*/A[3]
Haileybury hosts its ownModel United Nations Conference every year,[4] for over a thousand pupils, making it the largest MUN conference in the UK.[5] The conference is typically held the weekend before the Easter holiday.

The Haileybury campus originally belonged to, and was occupied by, theEast India College, the training establishment founded in 1806 for administrators of theEast India Company. The East India College was initially based atHertford Castle, but substantial grounds in Hertford Heath were acquired for future development.William Wilkins, the architect ofDowning College, Cambridge, and theNational Gallery in London, was appointed principal architect. The buildings comprise four ranges which enclose an area known as Quad, the second-largest academicquadrangle in Britain after that ofChrist Church, Oxford.[6]
The East India College closed in 1858 and, four years later, Haileybury College was set up as a boarding school for boys on the site. The first headmaster wasArthur Gray Butler. In 1942, Haileybury and theImperial Service College (which had itself subsumed theUnited Services College) merged to become Haileybury and Imperial Service College, now referred to simply as Haileybury.[7]
In the late 20th century, reforming headmasterDavid Jewell took charge of Haileybury, bringing it out of its post–Cold War austerity.Stuart Westley, Master of Haileybury until July 2009, was responsible for making the school fully co-educational.[8]
In 2006/2007, Haileybury advised on the building of a Haileybury inAlmaty, Kazakhstan, where all-English GCSEs are taught and the curriculum is taught similarly under the guidance of Haileybury. The school, opened in September 2008, is known as Haileybury Almaty.
The pupils are made up mostly of Kazakh citizens. They are all required to speak English. The academic year 2010–11 saw the first batch of pupils pass their IGCSE exams. Since August 2011, Haileybury Almaty has opened asixth form. In 2016, 11 pupils graduated from the sixth form, with one getting admission toTrinity College, Cambridge University, and 6 securing places atUniversity College, London (UCL). A second school, in the Kazakhstan capital,Astana, was opened in September 2011.[9]
Past pupils are known asOld Haileyburians.
For a list, seeList of people educated at Haileybury and Imperial Service College.