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St Mary's School

Catholic, Founded 1939

Updated July 2026

3–19Ages
Co-edGender
Day & BoardingType
Non-profitOwnership

Languages

English flagEnglishFrench flagFrenchSpanish flagSpanish

St. Mary's School, Nairobi, is an international day school founded in 1939 that provides a holistic education blending academic, spiritual, and physical development. It serves students from early childhood through to pre-university levels, offering a variety of national and international curricula.

Teaching approach

The school is a private Catholic institution that operates under the motto 'Bonitas, Disciplina, Scientia'. Its mission is to educate learners in a holistic manner, faithful to the Catholic ethos, to help them acquire knowledge, skills, and values relevant to society. The school aims to nurture respectful, God-fearing learners who are prepared to face the future with confidence and courage.

Programmes

The school offers a comprehensive range of programmes, including Kindergarten (Playgroup to KG2), the Competency-Based Curriculum (CBC) for Grades 1–6, and Junior Secondary for Grades 7–9. It also provides the Cambridge Primary curriculum (Year 1–Year 7) and the International General Certificate of Secondary Education (IGCSE) for Years 8–11. For senior students, the school offers the Kenya Certificate of Secondary Education (KCSE) and a two-year International Baccalaureate (IB) Diploma programme, which is co-educational.

Outcomes

St. Mary's has a reputation for molding confident, well-rounded leaders and influencers who have gone on to succeed worldwide. The school is internationally recognized, and its graduates frequently secure placements in top universities globally. The IB Diploma programme, in particular, is noted for its effectiveness in preparing students for university-level studies.

Student support

EAL support
Unknown
Learning support
Unknown

Learning support

The school is committed to developing students academically, spiritually, and physically, with programs designed to promote self-expression, discipline, and God-centered living. It encourages students to become communicators who are principled, open-minded, innovative, and caring.

Frequently asked questions(6)
What curriculum does St Mary's School offer?
St Mary's School offers Cambridge Primary, IGCSE and IB Diploma.
What ages does St Mary's School teach?
St Mary's School enrolls students aged 3 to 19.
Is St Mary's School a day or boarding school?
St Mary's School is a day and boarding school.
What accreditations does St Mary's School hold?
St Mary's School holds accreditations including IB and Cambridge International.
Is St Mary's School co-educational?
St Mary's School is a co-ed school.
Where is St Mary's School located?
St Mary's School is an international school in Nairobi, Kenya.

Tuition & fees

No published fee schedule was found for this school.

Admissions

The school is an equal opportunity institution that admits students based on merit, regardless of religion, race, or affiliation. Prospective families are encouraged to contact the school to schedule an appointment, and application forms are available for download on the school's website. The admissions process includes an application checklist and, for certain programs, interviews.

Calendar

The school operates on a term-based system with scheduled breaks and academic clinics. Upcoming events include mid-term breaks for the national curriculum, junior school interviews for Grade 1, and academic clinics for the IB Diploma Programme. A detailed school calendar is available for download on the school's website.

Facilities

Swimming poolSports fieldGymnasiumLibraryScience labsArt roomMusic roomRecording studioBoarding

About the campus

The school is situated on an expansive 85-acre site in Muthangari, Westlands, featuring historic buildings, staff quarters, and a forest with a camping site. Academic facilities include three technology centers (Junior, Senior, and IB), biology, physics, and chemistry laboratories, and separate libraries for the Junior and Senior schools. The campus also houses a music center with a recording studio, art rooms, and extensive sports fields, including a swimming pool.

Co-curriculars

The school offers a wide range of activities to promote holistic development, including sports such as swimming, basketball, skating, soccer, rugby, karate, golf, and chess. Students can also participate in clubs and organizations like the East African Model United Nations (EAMUN), Middle School Model United Nations (MSMUN), the World Scholars club, the President's Award (P.A.), and theatre arts. Additionally, the school organizes academic trips and provides opportunities for creativity, activity, and service (CAS).

  • Gregory SangSenior School Coordinator Mathematics
  • Milicent KihagiDean of Studies Business Studies & Computer
  • Lilian MageniIBDP Coordinator Physics & Chemistry
  • Francis MburuJunior School Coordinator Science & Mathematics
  • Joseph KiarieDean KCSE Kiswahili & Geography
  • Asumpta KaruruHead of Languages English Language
  • Grace MiruguCAS Coordinator Art
  • Kevins OkumuDean IGCSE Physics & Chemistry
  • Willis NyadidaHead of Extended Essay Computer Studies
  • Elizabeth MutegiHead of Theory of Knowledge English & Literature
  • Linet OduorHead of Careers Chemistry & Biology
  • Simon NabiswaHead of Marketing English & Literature