Girls' Schools Association

The GSA can trace its history back to the Association of Headmistresses which was founded in 1874. Its president in 1964–66, Diana Reader Harris, ensured that it made a strong and considered response to the influential Plowden Report. It was established in 1974 following the amalgamation of two of the AHM's sub-groups: the Association of Heads of Girls' boarding Schools and the Association of Independent and Direct Grant Schools. It moved from London to new headquarters in Leicester in 1984, where it shared offices with the Association of School and College Leaders (ASCL) before moving to its current office, still in Leicester.

The GSA is a member-led organisation providing mutual professional support and representing the views of practising heads of independent girls' schools. A series of member-led committees report to a Council of Heads which is led by Officers ie the President, Vice-President (usually the previous year's President), the President-Elect and Treasurer. Each presidential position is usually held by a practising Head for one calendar year.

Since 1994 the GSA has been supported by a professional secretariat which is currently led by Chief Executive Vivienne Durham.

Below is a list of GSA member schools. Some members are the girls' sections of "Diamond Schools".

• Amberfield School – closed in October 2011
• Casterton School – merged with Sedbergh School in 2013
• Lodge School – closed in 2010
• Dame Alice Harpur School and Bedford High School – merged to become Bedford Girls' School (member school) in 2011 and 2012
• Peterborough High School – became coeducational in 2010 and renamed The Peterborough School
• St Joseph's Convent School – became coeducational in 2010 and renamed St Joseph's College
• St Margaret's School, Edinburgh – closed in June 2010

• Girls' Day School Trust
• List of girls' schools in the United Kingdom
• The Headmasters' and Headmistresses' Conference (HMC)

• Official website