If you condition on race, American students do better (e.g. on PISA) than almost any other country with a few exceptions like Hong Kong. American test cores are

If you condition on race, American students do better (e.g. on PISA) than almost any other country with a few exceptions like Hong Kong. American test cores are (slightly better than) what you expect given our demographics, which are by far the strongest predictor of population educational attainment.