Poverty matters more in the US

http://rationalexpressions.blogspot.com/2013/06/poverty-matters-more-in-us.html

Michael Pershan takes a look at some PISA data and the link between poverty and achievement. For more, I recommend Dennis Condron's article in Educational Researcher about equity and excellence, as seen in PISA data: http://edr.sagepub.com/content/40/2/47.