PISA will release its results in two months and the whole world holds its breath and waits. PISA is an assessment that focuses on the cognitive skills of the 15-year-olds students. The results of the 2012 survey show the continuous improvements of the Asian countries which now outperform the rest of the world. There are certainly some critics regarding this survey, but the rigor used in all the steps is unanimously acknowledged and hailed. A large number of statisticians have been involved, particularly in the survey design, and some complex methods have been used.