. >> joining me to discuss this is amanda ripply author of "the smartest kids in the world." >> your book followed american exchange students. they pretty much faced a shock when they got to poland. why are they different. >> finland is the utopia of education. kids get an outstanding result in maths and science, without doing a huge amount of work. korean kids get the same. they are two different places stop. >> south korea is striking. if you looking at the differences between them and there's, they are ranking number two in the world in reading, 93% high school graduation act, better than the 77% in the u.s. what changes were made that were different? >> this is one of the hopeful things. the startest countrieses in the world are not smart. it's a stagnant problem. the countries did things, sometimes by accident or on purpose. they made it much more vigorrous. they meed it harder to get into teacher training college. >> so you write about a teacher in south korea earning $4 million a year, most of which is tutoring, it's not the norm. here. >> the demand for education in korea, li