Sources: From Why We’re Behind: What Top Nations Teach Their Students But We Don’t, Common Core, 2009, Washington, DC; 2000 U. S. PISA ranking from Highlights from the 2000
Program for International Student Assessment (PISA), National Center for Education Statistics, 2001, Washington, DC; 2003 U. S PISA rankings from First Results from PISA 2003, OECD, Paris; 2006 U.S. PISA rankings from PISA 2006 Database; 2009 PISA rankings from “Programme for International Students Assessment (2009)” table at http://en.wikipedia.org/wiki/Programme_for_International_Student_Assessment.
