In a joint response, the National Association of Head Teachers and the Secondary Heads Association said they supported ways of identifying potential for higher education in students whose backgrounds made them unlikely to do well at A-level.

BBC: Study backs talent-spotting tests

And being an economist, I didn't have much to work with in terms of sports, but I started to think, OK, well, these are country-level events and countries do well at things because they're rich or because they've got population or education.

NPR: Using Economics To Predict Olympic Medal Standings