As Steve Sailer explains in
http://isteve.blogspot.com/2013/12/graph-of-2012-pisa-scores-for-65_4.htmlGraph of 2012 PISA scores for 65 countries/economies
December 4, 2013
and other posts on his blog, the performance of Asian and white American students is comparable to that of students in East Asian and European countries, respectively. I think the raw performance of the U.S. educational system is OK, neither great nor awful, and doubt that Common Core will make a big difference, but I think we ought to be paying less for that performance.