In England 23% of primary school children are ethnic minority.
The figures are much higher in the States. Of course there were indigenous 'minorities' in what is now the United States before the British and European settlers arrived - and those settlers then imported (by force) a hefty black minority population. But the Hispanic element in the US population was pretty small, despite (or perhaps because of) the eventual US takeover of the former Spanish territories of Texas, California, Florida and New Mexico. Now the Reconquista is well under way.
The estimates found that nearly half (47 percent) of the nation’s children younger than five were a minority in 2008, with 25 percent being Hispanic.