Business Insider – Libby Kane 
For the most part, American children aren’t great at math. But Chinese children tend to be excellent. Testing half a million students worldwide, the Program for International Student Assessment is one of the most widely cited measurements of global education, and it’s consistently found Chinese students at the top of the academic pile … and Americans much nearer the bottom. Some experts argue that the PISA assessment, like any standardized tests, primarily measures a student’s ability to take the test, not their knowledge, but hardly anyone disputes that the American education has some work to do when it comes to math. (more)