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St. John's International School - Brussels

Belgium, Brussels

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The school at a glance
Instructs in English
Fees €14,200 - 44,600
Ages 1 - 18 years
Pupil numbers 800
Type Co-educational, Day, Boarding
Opened 1964
Bus Service Yes

St. John's International School is a co-educational day and boarding school in Waterloo, Belgium, founded in 1964. The school offers the full IB continuum from ages 3 to 18 and boarding for students aged 11-17. With 65+ nationalities represented, it boasts the best IBDP average in Belgium (36 points in 2025), with 40% of students scoring 38+ points. Its performing arts centre is described as the finest of any school in Belgium.

Academic offering
Curriculum IB PYP, IB MYP, IB Diploma Programme
Strengths Best IB results in Belgium, 65+ nationalities, Performing arts excellence, 90% first-choice university acceptance, Boarding option
Clubs Sports programs, Performing arts, Summer camps, Global exchange programs
Stages Early Years, Primary, Secondary
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