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Most popular international schools in Belgium

· updated monthly

The five schools Belgium parents researched most this year, chosen from the 45 international schools in the country. Ranked by how many families opened each school’s profile and spent time reading it between July 2025 and June 2026, then the full picture on curricula, class sizes and fees.

45
International schools
inc. 1 boarding
€17.9K
Average school fee
For a 12 yr old
869
Average school size
100 – 4,094 students
20.2
Average class size
Range 15 - 25

The 2026 ranking

Belgium’s five most-researched schools

Ranked purely by parent interest — the number of families who opened each school’s profile and spent time reading it between July 2025 and June 2026.

1 The International School of Brussels — international school in Brussels

The International School of Brussels

The International School of Brussels is a private, not-for-profit day school in Belgium for ages 2–18. It offers IB programs (PYP, MYP, DP) along with AP, BTEC, and an American curriculum, with English as language of instruction. French begins at age 2.5, with a bilingual program from Grade 5; additional languages include Dutch, Spanish, and Japanese, and a Home Language Programme integrates languages spoken at home. ISB uses an inquiry-based, personalised learning approach across ECC to High School. Set on a 40-acre forest campus in Forêt de Soignes beside a UNESCO World Heritage site, the campus includes libraries, Arts Annex, theatre, science labs, a digital music classroom, and arts spaces. Sport and outdoor facilities include two gyms, a running track, athletic fields, a dojang, climbing walls, a tennis bubble, and a VUB swimming partnership. ISB Plus offers about 90 activities and 50+ teams, with community service, CAS, and leadership development.

€12.8K €49.7K
🏷️ €22,590 – 49,715 / year
😊 Ages 2 to 18
📖 IB (PYP), IB (MYP), IB (DP), Advanced Placement (AP), American Curriculum, BTEC Qualification
📍 Brussels
2 Antwerp International School — international school in Antwerp

Antwerp International School

Antwerp International School is an IB World School in Belgium serving PreSchool to Grade 12, with 330 students from 40 nationalities and a 7:1 student‑to‑faculty ratio. The school offers the IB continuum: PYP, MYP and DP. English is the language of instruction; from Grade 6, four lessons per week are taught in French. AIS provides Mother Tongue instruction for English and Dutch from Starter to Grade 12; German Mother Tongue from Grade 1; French Mother Tongue from Grade 6, with Spanish Ab Initio in the DP. The campus features the STEMzone, a €2+ million facility with science labs, fabrication labs, makerspaces, mathematics spaces and IT areas. AIS has a Fine Arts Centre, a 350‑seat theatre and multiple music rooms; DP Visual Arts Exhibition and musicals such as The Wizard of Oz, Grease and Fiddler on the Roof. The school is NEASC and CIS accredited and offers a broad co‑curricular programme, including the Duke of Edinburgh Award and after‑school activities.

€12.8K €49.7K
🏷️ €12,800 – 37,260 / year
😊 Ages 2 to 18
📖 IB (PYP), IB (MYP), IB (DP)
📍 Antwerp
3 Da Vinci International School Antwerp — international school in Antwerp

Da Vinci International School Antwerp

Da Vinci International School Antwerp is a boutique international school founded in 1997, now part of Chatsworth Schools group. It serves students from age 2 to 18 in an IB Continuum, with the Primary Years Programme for ages 3–11, the Middle Years Programme for grades 6–10, and the Diploma Programme for grades 11–12. The school prioritizes small class sizes and a nurturing community where every student is a valued member of the Da Vinci family. The curriculum emphasizes language development with Dutch and French offered in the MYP and international focus across disciplines. Students engage in structured inquiry through the PYP's six thematic units, and in the MYP they prepare for the DP with study-skills and careers programmes. The DP includes Theory of Knowledge, CAS, and Extended Essay. Beyond academics, the school offers excursions and clubs in arts, culture, and service, plus a Band, art exhibitions, and PTA-led events.

€12.8K €49.7K
🏷️ €17,325 – 29,900 / year
😊 Ages 2 to 18
📖 IB (DP), IPC (International Primary Curriculum), IMYC (International Middle Years Curriculum)
📍 Antwerp
4 St. John's International School — international school in Brussels

St. John's International School

St. John's International School is a private, all-through IB school in Waterloo, Belgium, part of Inspired Education Group, with boarding at Shannon House. It serves ages 1 to 18 and offers the IB continuum—PYP, MYP and DP—alongside AP courses for Diploma students. Five graduation pathways combine the IB Diploma with AP credits and the St John's High School Diploma. A Dual Language Programme in French and English runs from Early Years through Primary to foster bilingualism; in Grades 6–8 students study two to three languages, and Grades 9–10 feature a Mother Tongue Programme with eight languages. Language A and Self-Taught Literature are available within the Diploma. The Waterloo campus features bright classrooms, Samsung smartboards, VR headsets, and well-equipped visual and performing arts spaces, including a 400-seat professional theatre—the largest in Brussels—and the Greene Gallery. NECIS membership supports a vibrant co-curricular life, alongside Summer Camps and Exchange Programmes.

€12.8K €49.7K
🏷️ €14,200 – 45,850 / year
😊 Ages 1 to 18
📖 IB (PYP), IB (MYP), IB (DP), Advanced Placement (AP)
📍 Brussels
5 Brussels American School — international school in Brussels

Brussels American School

From the details provided, the institution described is Brussels Unit School, a DoDEA (Department of Defense Education Activity) school in Brussels. It serves preschool through 12th grade with a combined elementary, middle, and high school population and is part of Brussels Community Schools in DoDEA Europe West District. The curriculum is stated as American Curriculum with Advanced Placement (AP). The school offers a PSCD program for students with disabilities and a general special education program for a diverse learner population. The age range is 4 to 18. This profile does not include information about Brussels American School. If you intended Brussels Unit School, I can format a full school_character entry. If you need Brussels American School specifically, please provide the correct details or confirm that BAS is the target, and I will adjust accordingly.

€12.8K €49.7K
🏷️ €28,499 – 31,519 / year
😊 Ages 4 to 18
📖 American Curriculum, Advanced Placement (AP)
📍 Brussels

What’s on offer

Curricula & languages in Belgium

The mix of programmes and teaching languages across all 45 schools. Many offer more than one curriculum, so totals run higher than the school count.

Most popular curricula

Number of schools teaching each curriculum.

IB
20
British
10
Cambridge
10
International
7
Montessori
6
Other
11

Languages of instruction

Number of schools teaching in each language.

English
44
French
27
German
6
Dutch
6
Italian
4

Size & classes

How big are the schools, and the classes?

School size and class size shape day-to-day experience as much as curriculum does.

School size, by students

Schools grouped by total enrolment.

Avg 869
15
1
0
2
1
100–898899–1,6971,698–2,4962,497–3,2953,296–4,094

Average school size is 869 students · based on the 19 schools that report enrolment.

Class size

Schools grouped by typical class size.

Avg 20.2
5
1
3
15–1920–2425–29

Average class size is 20.2 students · based on the 9 schools that report it.

What it costs

Annual fees in Belgium

Fees shown are one year for a 12-year-old (or the closest age available), excluding one-time enrolment costs.

Fees at a glance

Across the 43 schools that publish a price for a 12-year-old. All figures in EUR.

Minimum
6,283
Average
17,886
Maximum
36,153

Schools by fee band

How many schools sit in each annual-fee range.

€6.3K – 16.2K
17
€16.2K – 26.2K
20
€26.2K – 36.2K
6

Keep exploring

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