“PISA was developed by a kind of think tank for the developed world, called the Organization for Economic Co-operation and Development, and the scientist at the center of the experiment was Andreas Schleicher.” SchoolEducationStudentsTestingAcademicsPisaThe Treasure MapAndreas Schleicher Book:The Smartest Kids in the World: And How They Got That Way Source: The Smartest Kids in the World: And How They Got That Way