Our Campuses, unique curriculum, small class sizes, outstanding results, highly skilled teachers and multiple accreditations make BISI an excellent choice for your child. 



We offer a choice of campuses; one newly furbished site in the heart of Istanbul and another in the rural countryside near the Belgrade Forest/Black Sea with sporting facilities including three gymnasiums, a half size football pitch and a 25 metre swimming pool.  The Botanic Garden with its stunning views down to the Black Sea is a quiet haven of tranquil greenery used both as a teaching space and a relaxation space when the weather permits.



BISI is the only school in Istanbul that offers a modified National Curriculum for England, from the ages of 2 ½ to 14 years.  Following this we offer the International General Certificate of Secondary Education, provided by Cambridge International Examinations.  In the final phase of Secondary education, BISI offers the widest range of International Baccalaureate Diploma Programme course choices amongst all IB schools in Turkey. 


Class Sizes

There has been a considerable amount of academic research over the years which shows that students benefit from being in schools with small class sizes.  BISI maintains a 1:8 teacher : student ratio in Pre School and Primary School and a 1:5 teacher : student ratio in Secondary School. Maximum class sizes of 16, 20 and 15 respectively guarantee the quality of education for your child.



Our high quality teachers and our low teacher : student ratio ensures that all our students achieve their full academic potential.  In the IGCSE Programme, students have gained 5 or more A* to C grades in an average of 85% of all examinations over the last six years.  This compares with approximately 65% of students gaining the same achievement in the UK.  At the IB level, BISI has an outstanding record of six consecutive years of improving results. Our students have achieved a 100% pass rate in the Full IB Diploma Programme for the last four years and points totals consistently above the world average. Our students go on to universities across the globe, however our alumni are mainly found at universities in the UK, the USA and Canada.  Most of our students go to their first choice of university and also get their first choice of course, recently we have sent students to Cambridge, University College London, the London School of Economics and the University of Toronto amongst many others.


Click here to view our most recent success stories. 


Teaching Staff

Highly skilled, highly qualified and highly experienced teachers deliver our curricula at all levels in their area of specialism.  In addition to their initial qualifications, many of our teachers hold a Master’s Degree or a Doctorate of Philosophy.  All Pre School and Primary School class teachers are first language English and all Secondary School teachers, in addition to being at least fluent in English, have experience of both the IGCSE and IB Diploma Programme.



The best schools around the world are inspected and accredited by independent agencies.  Most of these agencies have member schools and accredited schools.  To be a member, schools simply pay an annual fee enabling them to display the membership logo on their websites. To be accredited, schools need to undergo a rigorous evaluation or inspection every three to five years. BISI is accredited by three separate agencies; the Council of British International Schools, the Council of International Schools and the New England Association of Schools and Colleges.  We are the only school in Istanbul to hold these three accreditations and the reports can be accessed here.   


The accreditation agencies require a school to demonstrate the highest standard of practice in every area of their operation.  These accreditations are the bench mark for outstanding education worldwide.  Our accreditations are your guarantee of the quality of education available to your children. 


Whichever school you choose, you should always satisfy yourself that the school is fully accredited, for the sake of your children.