In the education systems of England, Wales, and Northern Ireland, and of Commonwealth West Indian countries such as Barbados, Trinidad and Tobago, Belize, Jamaica and Malta, sixth form (sometimes referred to as Key Stage 5) represents the final two years of secondary education, where students (typically between sixteen and eighteen years of age) prepare for their A-level (or equivalent) examinations.

The first five years of English secondary schooling were previously known as forms. Pupils started their first year of secondary school in the first form or first year, and this was the year in which pupils would normally become 12 years of age. Pupils would move up a form each year before entering the fifth form in the year in which they would have their sixteenth birthday. Those who stayed on at school to study for A-levels moved up into the sixth form, which was divided into the Lower Sixth and the Upper Sixth. In some private schools, the term Middle Sixth was used in place of Upper Sixth, with the latter being used for those who stayed on for an extra term to take the entrance examinations that were previously set for candidates to Oxford or Cambridge universities. Other schools described these Oxbridge examination students as being in the Seventh Form or Third Year Sixth.

Coordinates: 53°57′49″N 2°01′39″W / 53.963576°N 2.02747°W / 53.963576; -2.02747

Skipton Girls' High School, founded in 1886 by the Petyt Trust, is an all girls selective grammar school situated in Skipton, North Yorkshire, England. The school has academy status. Around 800 girls aged 11 to 18 are educated at the school, of which 190 are in the sixth form. The current headteacher is Mrs Janet Renou, who took up the position in September 2002. The previous headteacher was Diana Chambers.

The school was awarded specialist status as an Engineering College in September 2003, becoming the first all girls school to achieve this status. It also has Investors in People accreditation.

On 1 April 2011, the school became an academy.

As an academy the Governors are responsible for the admissions. Girls who wish to join the school sit a selection test. There is no selection test for entrance into sixth form as students are admitted on the basis of their GCSE grades and a reference from their current school.