Since 1970s, there has been a boom in such "international schools," which teach in English in non-Anglophone countries, mostly offering British A-levels, American APs and SATs, or the International Baccalaureate. But nowadays international schools increasingly ＿＿（11）＿＿ their name. Though their clientele varies from place to place, four-fifths of the pupils they teach around the world are locals. Thirty years ago, just a fifth ＿＿（12）＿＿ . The main reason is increased ＿＿（13）＿＿ for schooling mostly or entirely in English, both in rich countries and even more from rich parents in developing countries who want their children to be able to go to university in Britain or North America. This new elite can outspend even very highly paid foreign managers—and multinationals trying to cut costs are ever ＿＿（14）＿＿ willing to pay school fees. Locals are more appealing clients, too: their children tend to stay for their entire schooling, unlike "expat brats," who are always moving on, leaving seats to be filled. And a parent-teacher ＿＿（15）＿＿ packed with the local elite is more helpful than one full of foreigners.