International School of Brussels

Co-Education (3-18)
Day School
+32 2 661 42 11
19 Kattenberg, 1170 Brussels, Belgium

Year of Foundation 1951
Enrollment Phase / Grades We accept new students in all grade levels throughout the school year
Boarding Day School
Number of students 1350
Nationalities 70
Teacher Student Ratio 7.5 : 1
Accreditations Council of International Schools and Middle States Association of Colleges and Schools
Headmaster James MacDonald
Yearly Tuition Fee (Min) 18,825 EUR
Yearly Tuition Fee (Max) 40,625 EUR


Since 1951, the International School of Brussels (ISB) has delivered high quality education to students from countries around the world. Today, with 1400 students aged 3-18, it is widely regarded as one of the world’s premier international schools.

Driven by a powerful mission – Everyone included, Everyone challenged, Everyone successful – ISB looks back with pride at its history, it’s uncompromising commitment to teaching quality, and the values of inclusion and diversity that make it what it is today.

It also looks forward and is constantly looking for new ways to ensure that students have the opportunity, the choices, and the right level of challenge and support to flourish.

Students graduating from ISB attend a range of leading universities around the world.

ISB is accredited by the Council of International Schools and the Middle States Association of Schools and Colleges.

To find out more about why families choose ISB; our extraordinary international community; our unique curriculum that leads the majority of students to successful completion of the International Baccalaureate Diploma or Careers-related Programmes; our world-renowned learning support services; our wide range of extra-curricular activities; our secure campus in the heart of the Sonian forest; and much more, visit the school’s website.

Or simply contact the school by email and a member of our Admissions Team will be happy to help you and your family take the important step of choosing a school in Brussels.



The schoolwide curriculum is designed to prepare students to follow the IBDP which is offered in the last two years. We also offer the IBCP and a US High School diploma.

Languages of instruction

English and some courses are also offered in French

Foreign languages

French, Dutch, Spanish and Japanese, and a large number of mother tongue language options are offered for the IBDP.


MAP Testing, IB Exams

University counseling


Learning support



A wide range of extra-curricular activities are offered for all grades. Activities fall under five general categories: Art, Outdoor, Active, Interest and Language. Along with a fantastic art and performing arts program, we also offer one of the largest athletic programs in Europe and compete against other international schools in northern Europe.
School trips
Community service
Performing arts
Summer programs

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