GirlsIndependentBoarding

Marymount International School

Kingston upon Thames, Kingston upon Thames, Greater London · KT2 7PE

Founded in 1955, Marymount International School is a small girls' school in Kingston upon Thames offering both day and boarding places for pupils aged 11 to 18. With roughly 250 pupils and a pupil-to-teacher ratio of about five to one, classes are intimate and teaching is closely tailored. The International Baccalaureate sits at the heart of the curriculum, giving the school a distinctly international outlook. Inspectors from the ISI judged the school excellent, including for pupils' personal development, and all compliance standards were met.

250

Pupils

excellent

ISI

£37,140

Day fees / yr

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Overview & data

Gender: Girls
Type: independent (fee-paying) school
Age range: 11-18
Pupils: 250
Pupil:teacher ratio: 5
Location: Kingston upon Thames, Kingston upon Thames, Greater London
Website: http://www.marymountlondon.com
Telephone: 020 8949 0571

Entrance & admissions

Entry age: 11

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Headteacher

Headmistress Mrs Margaret Giblin

Teaching & academics

Marymount follows the IB rather than A-levels, an approach that suits families looking for a broad, internationally recognised qualification and a globally minded education. The unusually low pupil-to-teacher ratio of around five to one allows considerable individual attention, and a Middle Years Scholarship is available. Notably, close to a fifth of pupils receive some form of SEN support, suggesting a setting prepared to work closely with a range of learners.

Sixth form

Sixth-form pupils: 80

Qualifications offered

Learning support & SEN

SEN support: 21.89%
EHC plans: 0%

Arts & extracurricular

Scholarships

Middle Years Scholarship

Sport

Main sports

BadmintonVolleyballTennisSoccer

Beyond the classroom

Sport features prominently, with tennis, volleyball, badminton and soccer among the main offerings. The sixth form, around 80 pupils strong, gives older students a focused community in which to prepare for university.

Ethos & heritage

Founded: 1955
Religious character: None
Boarding: Yes

Mobile phone policy

Electronic devices (including but not limited to mobile phones, iPads, and laptops) may only be used during the school day if permission has been given by a staff member. Grades 9-12 students may use their mobile phones only during break and scheduled lunchtime. However, the use of technology is not permitted in the dining hall, and mobile phones are not permitted in the library. Grades 6-8 students must hand in their mobile phones to reception as they arrive in the morning. Grades 9-12 students are encouraged to hand in their phones at the start of the day or keep them locked in their locker/boarding room.

Money matters

Day fees (per year): £37,140
Boarding fees (per year): £60,180 - £62,880

Inspection reports

ISI rating: excellent
ISI personal development: excellent
Last inspected: 14 October 2025

Read the full inspection report ↗

The last word

A small, internationally focused girls' school for families drawn to the IB and the option of boarding. Fees are substantial, reaching up to £37,140 for day pupils and £62,880 for boarders.

The Passmate verdict