In addition to student achievement rankings，the OECD PISA tests assessed countries’ education quality based on students’ career developments and lifelong learning capabilities，as well as educational equity in terms of fairness and inclusion. The test results could serve as grounds to refine relevant education policies. The situation of educational equity for urban migrants of Shanghai based on PISA results of 2009 and 2012 was analyzed. The results showed that the negative impact of first generation migration status on learning performances had increased in three years. One possible explanation was that the composition of first-generation migrants had changed over the three years：more migrants that did not have access to quality education had taken PISA tests. Further analysis and rational thinking of PISA by more scholars and policymakers were looked forward to.