Marymount, a Catholic Girls Day and Boarding School for 11-18 year olds, has been offering the IB Diploma for over 30 years and has consistently been ranked within the top 5% globally. Students go on to the top universities worldwide. The school offers the pre-IB Middle Years Programme, stretching students without the need for incessant testing. The School welcomes all faiths and achieves a shared purpose for girls of 46 nationalities.
Marymount International School has a total of 263 pupils, with 95 pupils in the Sixth Form.