<p>I only use Gaokao scores to compare one Chinese jurisdiction with another. Their relative performance should give me an idea how those jurisdiction perform on the PISA with respect to Shanghai and Zhejiang. You are not suggesting level of corruption varies from place to place in China as it is in Europe, are you?;)</p>
<p>[Corruption</a> Perceptions Index 2013 - Results](<a href=“http://cpi.transparency.org/cpi2013/results/]Corruption”>http://cpi.transparency.org/cpi2013/results/)</p>
<p>Actually the PISA is well respected internationally. We certainly are not surprised with our performance up here. Personally I am more impressed with our score on the corruption index </p>
<p>I did take population density into consideration; that is why I think their true score is higher.</p>