Pisa winners in science: Singapore, Japan, Estonia, Taiwan, Finland. Sweden is somewhere around 30, bravely competing with countries like USA, France, Russia a

Pisa winners in science: Singapore, Japan, Estonia, Taiwan, Finland. Sweden is somewhere around 30, bravely competing with countries like USA, France, Russia and Spain. Brief visit to Tallinn might solve this mystery, instead finding some minute errors in schooling system design. :-)