Archbishop Tenison's Church of England High School, Croydon

Archbishop Tenison's Church of England High School, commonly known as Tenison's, is a co-educational 11-18, voluntary aided, school in the London Borough of Croydon, England, part of the educational provision of the Anglican Diocese of Southwark and Croydon Council. It is a specialist Mathematics and Computing College.

History
Several schools were founded by Thomas Tenison, an educational philanthropist, in the late 17th and early 18th centuries. In 1714, Tenison, by then Archbishop of Canterbury, founded a school for some "ten poor boys and ten poor girls" at North End, Croydon, on a site which is now close to Croydon’s shopping centre. Just over 300 years and three sites later, it is thought that the School is the oldest surviving continuously mixed-sex school in the world.

In 1792 increased endowments allowed the school to expand into a new brick built building next to the original school house, and to increase the roll to 14 boys and 14 girls.

Due to the hostilities of the Second World War, the School was moved away from the dangers of the Blitz in South London and relocated to Craigmore Hall in the countryside near Crowborough, East Sussex, with pupils evacuated and billeted with the local populace. After the War, the School returned to Croydon on a site on Selsdon Road, and Craigmore Hall returned to private use.

The School now occupies a site established in 1959 in a residential area of Croydon – Park Hill, ten minutes' walk from East Croydon station. Since 1959, the facilities have been augmented by the building of a Sixth Form Centre, an Art block, and Geography and Technology Centres.

Founder’s Day
A Tenisonian tradition is that once a year, usually the morning of the first Friday in May, the entire school gathers to celebrate the anniversary of its foundation in 1714, the life of the founder Thomas Tenison and the achievements of the past academic year. The event is attended by pupils, the governors and representatives from the Diocese of Southwark.

Houses
Pupils at Tenison's are organised in a manner typical of British schools - they are sorted into a house system. These houses determine the colour of a pupil's mitres on their school tie. Pupils are actively a part of the house system from years 7 to 10, and compete annually for the House Points Cup and the Inter-House Cup (a sporting competition). Involvement within the house system lessens in year 11; however, there have been calls to put greater emphasis on the house system, and inter-house competitions, for all year groups.

The houses at Tenison's are named after famous Archbishops of Canterbury, and include:
 * Fisher
 * Ramsey
 * Temple
 * Becket
 * Wood

Sport
The school has no on-site grass playing fields but has the use of nearby Lloyd Park and facilities at nearby Coombe Lodge, providing pitches for both football and cricket. In 2002 the school opened an all-weather surface on the School site which enables the provision of tennis, basketball, netball and five-a-side football, as well as four other on-site tennis courts.

Sixth form
The sixth form was established jointly with St Andrew's High School, Croydon in 1978 but resides on Tenison's premises.

Old Tenisonians
Notable Old Tenisonians include:
 * Graham Butcher, first-class cricketer
 * Lynne Owens, Director General of the National Crime Agency