https://teacherrevised.org/2009/03/24/standardized-testing-inadvertantly-or-not-they-are-racist/

http://mjperry.blogspot.hk/2010/06/sat-is-racist-solution-make-test-harder.html

http://www.thedailybeast.com/articles/2016/06/25/the-racist-origins-of-the-sat.html

I agree completely, ban them all,PISA included

So ancient chinese invented a major branch of racism with the imperial exam system