KCIS

I planned to let my son studying in international school and KCIS is one of my target. Yet, after visiting the school, it seems the school looks not very international. For example. the students there are mostly local students. Also some teachers are not westerners too. I have no doubt of its Putonghua teaching but how about the English standard Can teach native English? Any KCIS parents can share your experiences? Many thanks!