If you're moving to the Netherlands with school-age children, or you're just curious about how the Dutch education system handles language, you've probably wondered: what language is actually spoken in Netherlands schools? The short answer is Dutch, but the full picture is more layered. The Netherlands has a multilingual approach that surprises many outsiders.
The Primary Language: Dutch
Dutch is the official language of instruction in nearly all schools across the Netherlands. From primary school (basisschool) through secondary school (middelbare school), teachers deliver lessons in Dutch, textbooks are written in Dutch, and students complete assignments and exams in Dutch.
This applies to public schools (openbare scholen) and most private and religious schools (bijzondere scholen). The Dutch government mandates that all schools teach in Dutch unless they qualify for specific exceptions, which we'll cover below.
What Does This Mean for Non-Dutch Speakers?
If your child doesn't speak Dutch, don't panic. The Netherlands has a well-developed system for newcomers. Many schools offer International Transition Classes (ISK) โ intensive Dutch language programs designed for children aged 6 to 18 who arrive without Dutch proficiency. These classes typically last one to two years, after which students transition into mainstream Dutch education.
The quality of these programs varies by municipality, but major cities like Amsterdam, Rotterdam, Utrecht, and The Hague have dedicated ISK schools. The goal is functional Dutch fluency, not perfection โ children typically learn enough to follow regular classes within 12 to 18 months.
The International School Exception
Here's where the answer gets more interesting. The Netherlands hosts a significant number of international schools that teach primarily in English. These schools cater to expat families, diplomatic personnel, and Dutch families who want an English-language education for their children.
International schools in the Netherlands fall into two categories:
- International Schools (fully English curriculum): These follow the International Baccalaureate (IB), British (IGCSE/A-Levels), or American curriculum. Examples include the American School of The Hague, the British School in Amsterdam, and the International School of Utrecht.
- Bilingual Schools (tweetalig onderwijs or TTO): These are Dutch schools that offer a bilingual Dutch-English program. In TTO schools, at least 50% of lessons are taught in English from the first year of secondary school. The Dutch government officially recognizes this program, and students still earn a Dutch diploma.

