Mean is 500, standard deviation is 100. So, Shanghai students beat the advanced world's international mean by 0.75, 0.56, and 1.00 standard deviations. Pretty good. On an IQ-like scale, that's approaching 112.
Interestingly, the NYT table left out some low-scoring countries, such as Mexico, but then what possible policy implications do the educational attainment and intelligence of Mexicans have for an American audience? None, none I tell you! Here's an eyeball-frying graphic from The Guardian of the OECD countries (leaving out unrepresentative cities like Shanghai). Check out the bottom line: