I would take this measure of comparison with a large grain of salt; the Chinese scores especially are almost meaningless: http://www.brookings.edu/blogs/brown-

I would take this measure of comparison with a large grain of salt; the Chinese scores especially are almost meaningless: http://www.brookings.edu/blogs/brown-center-chalkboard/posts/2013/10/09-pisa-china-problem-loveless http://www.brookings.edu/blogs/brown-center-chalkboard/posts...