Top All Girl Boarding School UK. Established in 1614, the Haberdashers' Monmouth Schools in Monmouth, Wales, UK are unique in offering the advantages of single sex education.

It is part of a family of schools known as the Haberdashers' Monmouth Schools. Together with its brother school Monmouth School they collaborate for certain activities such as drama productions and certain Sixth Form courses. They also share a coeducational nursery, Agincourt School. This top girls boarding school consists of Inglefield House (ages 7–11) and the Senior School. School offers over 30 AS/A level subjects and run joint activities such as the Cadet Force, music, drama and foreign expeditions.

Girls aged 7 and above may board. Boarders reside in three main houses: School House (Years 3-8),Twiston Davies (Years 9-11) and Augusta House (Sixth Form, Years 12–13). HMSG is one of Wales' top performing independent schools. In the GCSEs ranked second in the country in 2010 with a 100% pass rate and came third the following year. Girls are encouraged to take part in extracurricular activities and non-academic pursuits. There is a wide array of activities, groups, clubs and societies and sports teams that pupils may join. It became the first school in the country to employ a sports psychologist. The rowing and lacrosse teams have been successful in recent years and team members have represented Wales in school and national competitions.

• 7 days boarding: 10,687 per term

• Website: http://www.habs-monmouth.org