St. John's International School
🇧🇪 Brussels · Founded 1964 · IB · Ages 1–18
Reviewed by Priscilla Han · 2026-07-24
One of the only all-through IB World Schools in Belgium, offering the full PYP–MYP–DP continuum from age 3 to 18 with strong published Diploma results.
Curricula
IB
Age range
1–18
Languages of instruction
English, French
Annual fees
EUR 14,750–46,500
Boarding
Yes
IB authorised
PYP, MYP, DP
Accreditations
Council of International Schools (CIS), Middle States Association (MSA), International Baccalaureate Organization (IBO), Boarding Schools' Association (BSA)
Tier Profile
We only tier dimensions backed by a public inspection verdict or verifiable accreditation. Other dimensions show a data flag — never a guessed score.
BrightKey's Assessment
St. John's International School, founded in 1964 and based on a green campus in the Brussels area (Waterloo), is an all-through IB World School authorized for the Primary Years, Middle Years and Diploma programmes. It serves an internationally diverse community spanning ages 1 to 18, offers both day and boarding places, and is part of the Inspired Education Group. The school reports a 2025 IB Diploma average of 36 points, which it states was the best in Belgium.
Why These Ratings?
Inspection & AccreditationA — Excellent
Capped at A: Belgium has no single graded public inspectorate that publishes an Outstanding/Good band for international schools, so an S tier is not available. IB World School authorization for all three programmes is confirmed on the school's own site, and CIS, MSA and BSA accreditation marks are displayed, supporting a top A rating within the cap.
Strengths & Trade-offs
Strengths
- Full IB continuum (PYP, MYP, DP) explicitly authorized and delivered from age 3 to 18
- Strong published academic outcomes: 2025 IB Diploma average of 36 points (school-reported as best in Belgium), top score 43
- Both day and boarding options (boarding for ages 11–17)
- Highly international community with 65+ nationalities
- Multiple recognitions displayed (IBO, CIS, MSA, BSA)
Trade-offs
- Only the IB pathway is offered, with no British or American curriculum track for families seeking those systems
- High tuition, rising to EUR 46,500 for upper grades
- Detailed language-support and EAL structure is only partially published on the public site
Is It Right For You?
Best For
- ✓Expatriate and mobile families wanting a single IB continuum from early years to Grade 12
- ✓Families needing day or boarding places near Brussels
- ✓Students targeting the IB Diploma with strong measured results
Not Ideal For
- ✕Families specifically seeking a British (GCSE/A-Level) or American diploma pathway
- ✕Families needing lower-cost tuition options
Curriculum
The school delivers the full International Baccalaureate continuum — Primary Years Programme (PYP), Middle Years Programme (MYP) and Diploma Programme (DP) — for students aged 3 to 18, and describes itself as one of the only all-through IB schools in Belgium. AP exams are also offered for upper grades; no Cambridge authorization is stated.
Fees
Annual tuition for 2026-27 is published in EUR and ranges from EUR 14,750 (Early Years 1&2) to EUR 46,500 (Grades 10–12); a EUR 1,700 enrolment fee applies to new students. Full boarding is an additional EUR 18,980 and weekly boarding EUR 16,770 per year. Figures are from the school's official 2026-27 fee schedule.
Admissions
Admissions run through the school's published admissions process with personalised tours and open days; a EUR 1,700 enrolment fee applies to new students. Boarding admissions cover ages 11–17.
Campus Life
The school occupies a campus in Waterloo in the Brussels area, with sports and performing-arts extracurriculars, catering/nutrition, transport and boarding facilities. It is a member of the Inspired Education Group and hosts a community of 65+ nationalities.
University Placement
School-reported · not independently verified
IB Diploma results are school-reported: a 2025 average of 36 points (described by the school as the best in Belgium), a top score of 43, and 40% of students scoring 38 or more. Individual university placement destinations are not published in verified detail on the public site (school-reported, unverified).
Sources
Every verifiable fact carries a public source — verify it yourself.
- St. John's International School — official site · 2026-07
- IB International Baccalaureate programme page · 2026-07
- School Fees 2026-27 (official PDF) · 2026-07
- Fees & admissions page · 2026-07
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