St. Mary's School Nairobi

St. Mary's School Nairobi is a highly distinguished Catholic secondary school offering both the Kenyan national curriculum (KCSE) and the International Baccalaureate (IB) Diploma Programme, making it a unique hybrid institution bridging local excellence and global recognition. The school has been an IB World School since the 1980s, one of the longest-established IB institutions in East Africa. While the classic KCSE schooling is traditionally for boys up to Form Four, the IB programme is co-educational with approximately 100 students per cohort, drawing high-demand applicants from Kenya's top national schools including Alliance High School, Kenya High School, and Loreto. The IB curriculum at St. Mary's covers six subject groups — including English Literature, French, Swahili, Sciences, Mathematics, and Humanities — combined with Theory of Knowledge (TOK), Extended Essay, and CAS. The school's strong Catholic ethos fosters moral development, social responsibility, and leadership alongside outstanding academic achievement. St. Mary's graduates consistently gain admission to leading universities in the UK, US, and Kenya, making it a flagship institution for Kenyan families seeking internationally recognised secondary qualifications.