At a glance
Curriculum and academics
Marymount International School London is one of the longest standing international schools on the London city hub and a distinctive one, being both Catholic and all through IB for girls. It was founded in 1955 by the Religious of the Sacred Heart of Mary and welcomes girls of all faiths. In 1979 it became the first school in the United Kingdom to adopt the International Baccalaureate as its main curriculum, which gives it an unusually deep institutional experience of the programme.
The academic structure is fully IB. Girls follow the Middle Years Programme from age 11 to 16, an inquiry led framework that keeps a broad subject base, then move into the IB Diploma in the final two years, the qualification recognised by universities worldwide. Because the school runs the IB across every stage rather than bolting a Diploma onto a GCSE base, the learning approach is consistent from arrival to graduation, which appeals to internationally mobile families who want a single coherent system. A boarding community sits alongside the day school, so older girls can board while their families are posted overseas.
Comparing Marymount with other IB schools?
Use our compare tool to set up to three London schools side by side on curriculum, fees and stage, or take the quiz for a tailored shortlist. Free, no obligation.
Marymount International School fees
Marymount fees sit in the premium band of our London fees guide, in line with established London international schools that offer the full IB. Boarding fees, whether weekly or full, add substantially to the day rate. The school publishes a current scale that changes year to year, so treat any figure you see elsewhere as a guide and confirm the exact amount with the admissions office.
Beyond tuition and boarding, budget for a registration or application charge, a deposit, lunches for day girls, and the usual trips, uniform and activities. Boarding families should also ask about flights, guardianship and exeat arrangements. To set Marymount against other London IB options on cost and stage, open our compare tool.
Admissions
The main intake is in September, with the most common entry points at the start of the Middle Years Programme and into the Diploma years. Entry involves an application, school reports, assessment and an interview, and the school looks for girls who will thrive in an inquiry led IB setting. Boarding places are limited and tend to be confirmed earlier.
Families relocating to London should contact the admissions office well ahead to understand availability in the year group they need and whether a day or boarding place fits. Mid year entry is possible where space allows, but the Diploma years are harder to join once a cohort has started.
Location and who goes there
The school occupies a campus on George Road in Kingston upon Thames in south west London, a green and well connected borough on the edge of the capital with fast links into central London and out towards Surrey. Kingston and the neighbouring areas of Wimbledon, Richmond and Surbiton are long established with international and professional families, which suits a school that draws both day girls from the area and boarders from further afield.
The community is international by design, mixing London based expatriate families with overseas families who board their daughters while posted abroad. For how this part of south west London compares with other areas on schools, commute and cost, see the London city hub and our guide to London's zones for international schools.
Marymount International School reviews
GlobalSchoolGuide does not yet hold verified parent reviews for this school. We publish reviews only once they are submitted by named families and checked by our editorial team, so you will not find an invented star rating here. If your family has attended, you can help other relocating parents by sharing an honest account through our school reviews hub.
No school pays to be listed on GlobalSchoolGuide and no fee changes a placement on this page. Our profiles are built from public sources, inspection material and the schools own published information.
Frequently asked questions
How much are Marymount International School fees?
Fees sit in the premium band for London, with full boarding adding substantially to day fees. The school publishes a current scale that changes year to year, so confirm exact figures with the admissions office.
Is Marymount International School a good school?
It is a long established Catholic IB school and the UK's only all years International Baccalaureate World School for girls, with a strong record across the Middle Years Programme and the Diploma. We do not publish an invented rating.
Is Marymount a girls school?
Yes. Marymount International School London is an independent Catholic day and boarding school for girls aged 11 to 18, founded by the Religious of the Sacred Heart of Mary, and it welcomes girls of all faiths.
Does Marymount offer the IB?
Yes. Marymount follows the IB Middle Years Programme for girls aged 11 to 16 and the IB Diploma in the final two years. It was the first school in the UK to fully adopt the IB as its main curriculum.
When do Marymount International School applications open?
The main intake is in September, with assessment and interview as part of entry. Relocating and boarding families should contact admissions early to confirm availability in the relevant year group.
