> the only mention of China were Taipei, Hong Kong, Macau, and Singapore 0/4, none of these are really under the aegis of the Beijing regime - and while it is

> the only mention of China were Taipei, Hong Kong, Macau, and Singapore 0/4, none of these are really under the aegis of the Beijing regime - and while it is flattering of you to compare the entirety of the population of four countries with 40 million people to the single most selective school in the US, it is rather inaccurate to do so. If you look closer, PISA 2015 also had China in there, where the four provinces Jiangsu, Guangdong, Beijing, and Shanghai participated. Now poor illiterate migrants' kids might not get hukous to Beijing schools, so you might be right that this might be slightly biased - but even these four richer provinces have nearly the population of the US, so even if only 200 million Chinese are "outmathing us", it still makes a massive difference.