I'm living overseas in Asia and have noticed that among expat families with secondary school aged children, it's mainly the British that send their DCs to boarding school back in the home country. Whereas other nationalities e.g. French, American, Australian either just send their DCs to international school using the home curriculum, or they relocate as a family back home for final years before university.
Is this just because Britain has such a strong history of boarding schools? I'm wondering if there are other cultural reasons that British expats feel it's more important to have their DCs study in the UK rather than at a British international school.