General secondary education: highest published revenue
278 Belgian companies in the sector (NACE 8531) publish their revenue in recent accounts; here are the top 20. The International School of Brussels leads with €58.9m (financial year 2025).
Top 20
Ranked by revenue published in the latest filed accounts (accounts less than 3 years old).
These are the revenue figures published in the annual accounts. Small companies (micro and abridged accounts) do not have to publish theirs: they do not appear in this ranking.
← The whole General secondary education sector
Frequently asked questions
Which company in General secondary education has the highest revenue?
The International School of Brussels, with €58.9m in revenue (financial year 2025).
How many General secondary education companies publish their revenue?
278 out of 359, in accounts less than 3 years old. Small companies (micro and abridged accounts) are not required to publish it.
Analyse companies in General secondary education
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Open the full file →Active companies (legal entities) that have filed at least one set of annual accounts, based on the Crossroads Bank for Enterprises and the National Bank of Belgium. The sector is the main activity in the register; the municipality is that of the registered office. Data updated on 12 Nov 2026.