Translation:The international schools are interesting.
There are! I know some kids who go to one here in England. Most teaching can be in French, German, or English, and the pupils also get instruction in their native language. The school teaches to the European Baccalaureate, rather than English GCSEs and A-Levels.
As with what Mizinamo said, most pupils were children of people who did some kind of international work, but there were others too.