Primary Schools in Brussels for Expat Families: Options and Advice

The primary years — roughly ages 2.5 to 11 — are in many ways the most flexible period for international school placement. Young children adapt quickly to new environments, acquire languages rapidly, and are generally resilient to mid-year transitions. For expat families, this is actually good news: primary school placement in Brussels is somewhat less fraught than secondary, waiting lists are shorter, and the consequences of a transition are less disruptive.

That said, getting the primary choice right still matters. The curriculum your child enters at primary level shapes their trajectory for secondary. A child who starts the IB Primary Years Programme at ISB will naturally continue into the MYP and Diploma; a child who starts BSB's British-style primary will track toward IGCSE and A Levels. Understanding these trajectories from the start saves disruption later.

The International Schools: Primary Programmes

The International School of Brussels (ISB) — IB PYP

ISB accepts children from 2.5 years of age in its preschool programme and runs the IB Primary Years Programme (PYP) from preschool through Grade 5 (age 10–11). The PYP is an inquiry-based, transdisciplinary framework that focuses on developing the whole child — intellectual, emotional, physical, and social. Instruction is in English, and the school's diverse international community means children are exposed to many cultures and languages from the earliest years.

Annual fees for ISB primary years in 2025/2026 run from approximately €22,590 (preschool) to €41,400 (Grades 3–6), plus a non-refundable application fee of €2,000. ISB is located in Watermael-Boitsfort in southern Brussels.

The British School of Brussels (BSB) — British-Style Primary

BSB's primary section (from age 2 in Early Years through to Year 6, age 11) follows a broadly British-curriculum approach, incorporating elements of the UK National Curriculum alongside Cambridge International frameworks. There is strong emphasis on English literacy and mathematics, with French language teaching from early years.

The approach is more structured and content-focused than the IB PYP, which suits some families and learning styles. Annual fees for BSB primary are approximately €35,000–€39,000 per year. BSB is in Tervuren, east of Brussels.

St. John's International School, Waterloo — IB PYP

St. John's runs the IB PYP from its earliest year groups through to the end of primary. The school accepts children from 12 months of age in its nursery programme. Annual fees at primary level run approximately €11,900–€30,000 depending on year group, making St. John's the most affordable full-IB-continuum English-medium primary option in greater Brussels. The campus is in Waterloo, south of the city.

European Schools — Multilingual Primary

The European Schools primary curriculum is distinctive. Children are educated in their designated language section (English, French, German, Dutch, or others) from the outset, but receive substantial instruction in European languages from early primary. By the end of the primary cycle, most European School children are operating with meaningful competence in at least two languages.

For Category I and II families, the European Schools are essentially unbeatable on value — fees are heavily subsidised, and the multilingual education is genuinely excellent. For Category III families, the waiting list challenge applies as much to primary as to secondary: do not plan around a European School primary place unless you have one.

Local Belgian Primary Schools

For families on shorter assignments, those with young children who adapt easily to language immersion, or those waiting for an international school place, Belgian state primary schools are a realistic option.

Belgian state primary schools are generally of good quality, well-staffed, and free at the point of use. In Brussels, the choice is between French-medium schools (run by the Fédération Wallonie-Bruxelles) and Dutch-medium schools (run by the Flemish Community). Both systems operate in parallel in Brussels, and some municipalities have schools in both languages.

The practical challenge is language: a child arriving speaking only English will initially struggle in a French or Dutch primary classroom, though children under eight typically adapt within a few months. Schools in international-heavy areas are accustomed to non-native speakers and usually provide some support. This is most viable for children aged 3–8; for older primary children mid-assignment, the disruption is more significant.

The Lycée Français Jean Monnet — French Primary

For French-speaking families or those who want their children to follow the French national curriculum, the Lycée Français Jean Monnet in Uccle is the principal option. It accepts children from nursery (age 2) through to the French Baccalauréat, with approximately 2,650 pupils across two campuses. Fees start at around €8,930 for the first year, making it one of the more affordable private international options. Instruction is in French, and the teaching approach follows the AEFE (French abroad education agency) framework.

Key Considerations When Choosing a Primary School

Curriculum Continuity

Think beyond primary school when making your choice. A child who begins the IB PYP at ISB or St. John's will naturally continue into the MYP at the same school, providing curriculum continuity through the typically disruptive early secondary years. If you are likely to remain in Brussels for six or more years, choosing a school with a full programme from primary to secondary diploma level avoids a second school transition at age 11 or 12.

Language Learning

All the main international schools offer French as an additional language from primary level, which is a genuine practical benefit in Brussels. The European Schools go further, with meaningful instruction in two or more European languages from early primary. For families who may spend significant time in French-speaking environments, French acquisition in the primary years is a long-term asset.

Class Sizes and Pastoral Care

Class sizes at Brussels international primary schools typically run 18–24 students. European Schools can be larger in individual classes. St. John's and BSB are often cited by parents for strong pastoral care and a community feel that can be particularly reassuring for children arriving from overseas.

After-School Care Availability

If both parents work, after-school care (often called "after care" or "extended day") is an important practical consideration. Most international schools offer this as an additional service; check availability and cost before finalising your choice.

Transition Into Belgian Secondary School

A small number of expat families who settle longer-term in Belgium choose to transition their children from an international primary school into a Belgian secondary school (particularly into bilingual or more rigorous French-language lycées). This is most feasible when the child has achieved genuine French or Dutch fluency during their primary years. For the majority of internationally-mobile families, however, the natural pathway is through the international school system from primary to diploma level.

How Global Investments Can Help

Choosing a primary school in Brussels is one of several interlocking decisions — the others being where to live and how to structure your property arrangements. Global Investments works with internationally-mobile families at every stage of the relocation process, helping you understand the full landscape and plan effectively. Whether you are arriving for a two-year corporate assignment or a longer-term EU posting, our advisers can connect you with local specialists and help you think through the schooling, housing, and financial planning questions together.

Contact our team to discuss your Brussels relocation, or read our guide on international school fees in Brussels to understand the financial picture.

Fee figures and admissions criteria are based on published 2025/2026 school information and are subject to annual change. Verify with each school directly. This guide does not constitute financial or legal advice.