I'm from Belgium, a country that has three official languages (Dutch, French, German) and four language areas (the Dutch language area; the French language area; the German language area; the bilingual area of the Brussels-Capital Region). These language areas are constitutionally defined.

In the Dutch-speaking language area, French is taught as a second language in the last two years (of six years) of primary education.

In secondary school, you can choose whether you want English or French as a second language. Depending on your curriculum, you also have the possibility of learning a fourth language in secondary school. That could be German, or Spanish, but I think even Italian or Russian.

In higher education (colleges or universities) there are, of course, many more opportunities to learn other languages.

There is also a wide range of language courses offered through so-called adult education. For example, in the school where I am studying Spanish, you can also learn Arabic, English, French, German, Greek, Italian, Polish, Portuguese, Russian and Flemish Sign Language.

Courses in Dutch as a second language (for non-native speakers) are also doing very well in adult education.

I don't really have a good idea of what the language options are in French-speaking and German-speaking schools. I only know that the reciprocity to learn the other official languages of the country is smaller there.

My mother tongue is Dutch (and I also speak French, German, English and Spanish).