Settling Your Child into School in Brussels: A Practical Guide for Expat Families

Moving internationally with children is one of life's more demanding experiences. Brussels is one of the most welcoming cities in Europe for internationally-mobile families, with well-developed expat networks, experienced international schools, and a large community of families in exactly the same situation. Even so, the first weeks involve a great deal of administration, and knowing what to expect makes the transition considerably smoother.

This guide covers the essential practical steps for families with school-age children arriving in Brussels.

Step One: Commune Registration

Belgium is administratively organised into communes (municipalities), and all residents must register with their local Commune. This is not optional — it is a legal requirement and the foundation of your administrative life in Belgium. Registration gives you access to healthcare, schools, and government services.

The timeline: Registration must be completed within 8 days of establishing residence in your new home. For non-EU nationals, this means reporting to the communal administration within 8 days of arrival; a residence enquiry is then conducted, after which you will be registered and receive a residence permit (A card for initial temporary residence). For EU/EEA nationals, the process involves submitting an application for a registration certificate (Annex 19 or Annex 19ter for family members) at your first municipal appointment, with a complete documentation file required from 1 September 2025 onwards.

What to bring: Typically — passport(s), rental contract or proof of address, passport photos, employment contract or proof of means. Requirements vary slightly by commune. Check your specific commune's website in advance.

Key communes for expat families: Ixelles (Elsene), Uccle (Ukkel), Woluwe-Saint-Pierre, Woluwe-Saint-Lambert, Watermael-Boitsfort, and Tervuren each have their own communal administration. Tervuren and Wezembeek-Oppem are Flemish communes, so processes are through Flemish regional services.

The Commune registration triggers your entry into the national registry (Registre national), which gives you your national register number — an essential identifier for virtually everything in Belgian administrative life.

Step Two: Belgian Healthcare Registration

Belgium operates a system of compulsory health insurance through mutualités (or mutualiteiten in Dutch) — health insurance funds that reimburse a portion of medical costs. The main funds are Mutualité Chrétienne/Christelijke Mutualiteit, Mutualité Socialiste/Socialistische Mutualiteit, Mutualité Libérale/Liberale Mutualiteit, and the neutral fund Partena.

All residents paying into Belgian social security must register with a mutualité, including children. Even if you have employer-provided private insurance, the mutualité is likely also required for those employed in Belgium. Freelancers and the self-employed have a separate route through INASTI/RSVZ.

Children stay on family coverage until age 25 if they are studying. Registration involves providing your national register number, residence permit, bank details, and employer information. Affiliation is free for the mandatory element, with a small annual membership fee (approximately €64 in 2025 for the optional supplementary element). Processing typically takes two to four weeks, and many mutualités impose a waiting period of around six months before reimbursement entitlement begins — so register immediately on arrival, not once you need it.

Since 1 September 2025, electronic billing between healthcare providers and mutualités is standard, so most reimbursements now happen automatically without paper submissions.

Step Three: Understanding the Language Reality

Brussels is officially bilingual (French and Dutch), but in day-to-day expat family life, the practical linguistic landscape is more nuanced:

In international schools: English is the language of instruction at ISB, BSB, and St. John's. Children from English-speaking backgrounds will feel at home from day one. Children from non-English-speaking backgrounds may need initial English language support — check with the school about what is available.

French in daily life: French is the dominant working language in most of Brussels's expat environment — in shops, restaurants, medical appointments, and interactions with local authorities. A working knowledge of French makes daily life significantly easier, even if you are living primarily in the English-medium school bubble. Most expat parents on longer assignments find French lessons within the first year genuinely worthwhile.

Dutch in Flemish communes: If you live in Tervuren, Wezembeek-Oppem, or other Flemish municipalities, Dutch is the official administrative language. Most communal services offer French and often English support given the high international population, but official correspondence will be in Dutch.

Children learn fast: Children under about age 10 typically acquire conversational French within a year of arriving in Brussels, particularly if they have Belgian playmates, attend extracurricular activities, or spend time in French-medium environments. International school children do not pick up French as quickly as those in Belgian state schools, but most develop at least functional competence during a standard posting of three to five years.

Step Four: The Belgian and International School Calendar

The Belgian school year broadly runs from early September to late June, with the following holiday periods for 2025/2026:

Holiday	Dates (approx., 2025/26)
Autumn break	27 October – 2 November 2025
Christmas break	22 December 2025 – 3 January 2026
Carnival break	16–21 February 2026
Easter/Spring break	6–18 April 2026
Summer holidays	1 July – 31 August 2026

International schools in Brussels largely follow this framework, with some variation. BSB, for example, aligns roughly with these dates but may have slightly different term boundaries. Always verify the exact calendar with your child's specific school for the current year.

Step Five: The First Weeks at School

Most Brussels international schools assign new students a buddy or peer mentor — a current student who helps them navigate the school, find their way around, and make initial social connections. This is particularly valuable for children arriving mid-term.

Families arriving from the UK, the Gulf, Asia, or North America often find that their child adapts more quickly than expected. Brussels international schools are experienced with mid-year arrivals and have established pastoral protocols. Teachers are typically well-practised at identifying when a new student needs extra support and at facilitating integration into social groups.

Practical tips for the first term:

• Encourage extracurricular activities from early on — sports teams, drama, music clubs — as these are where friendships form outside the classroom
• Arrange playdates or social activities outside school hours in the first few weeks
• Connect with parent networks: most Brussels international schools have active parent communities and welcome new families warmly
• If your child is struggling with the transition emotionally, school counsellors at all three major international schools are qualified and available — do not hesitate to make contact

Step Six: Expat Family Support Networks

Brussels has one of the most developed expat family support ecosystems in Europe. Key resources include:

• The Bulletin (thebulletin.be): Brussels's long-running English-language magazine with extensive expat content and classifieds
• Brussels Mamas and similar parent Facebook and WhatsApp groups: active, practical, and responsive communities where newcomers can ask anything
• The school parent associations (parent-teacher committees at each international school) — a natural first social circle for new families
• SHAPE and NATO community networks for families connected to the military international community based in Mons/Casteau

Children with Additional Learning Needs

All three major Brussels international schools have learning support teams. ISB, BSB, and St. John's each have qualified learning support specialists who can provide assessment and support for children with dyslexia, attention difficulties, or other additional learning needs. When applying, disclose any existing assessments or educational psychology reports — this allows the school to plan support before your child starts, rather than after difficulties emerge.

How Global Investments Can Help

The logistical burden of an international move — finding a home, registering with authorities, sorting schools — is substantial. Global Investments works with internationally-mobile families relocating to Brussels and beyond, helping you navigate property decisions and connect with the right local specialists for legal, tax, and administrative matters. A smooth landing in Brussels, with a home and school sorted before you arrive, makes the settling-in period vastly easier.

Contact our team to discuss your Brussels relocation, or read our guide on applying to international schools in Brussels for the school admissions steps.

Belgian administrative requirements change regularly. Verify Commune registration requirements, healthcare obligations, and residence permit processes with your employer's HR team and/or an immigration specialist. This guide does not constitute legal or immigration advice.