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Turkey, Istanbul
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Cambridge Assessment Accreditation — Accreditation by Cambridge Assessment International Education.
Council of International Schools — Accreditation by the Council of International Schools, signaling adherence to international school standards.
Council of British International Schools — Accreditation by the Council of British International Schools (COBIS).
DofE International Award — The school participates in the Duke of Edinburgh's Award program (DofE).
International Baccalaureate — The school is an IB World School offering the IB Diploma Programme.
Middle States Association — Accreditation by the Middle States Association (MSA).
ISO 9001 — Quality management certification.
ISO 14001 — Environmental management certification.
ISO 22000 — Food safety management certification.
ISO 27001 — Information security management certification.
ISO 45001 — Occupational health and safety management certification.
The British International School Istanbul (BISI) offers a British-led international education for ages 2–18. The Pre-School follows the UK Early Years Foundation Stage; Primary and Secondary use the Cambridge Curriculum to IGCSE, with Key Stage 3 adapting the English National Curriculum. Key Stage 4 offers Cambridge IGCSE, and Key Stage 5 delivers the International Baccalaureate Diploma Programme. BISI, a division of The British School Istanbul, holds triple accreditation from CIS, COBIS and MSA-CESS—the first in Türkiye. It emphasizes languages—German, Spanish, French and Turkish—with English as a Second Language support. The Zekeriyaköy Campus serves ages 2–18 and includes four teaching blocks, two libraries, six science laboratories, a 210-seat theatre and BIS Botanic Garden. Outdoor spaces include rubberised play areas and a running track; facilities include three gyms, an all-weather pitch, a basketball/tennis court and a heated 25 m pool. Extra-curriculars cover drama, photography, guitar and choir, plus CAS, MUN and debate.
