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This book is from the late 1980s and so some of the material is quite dated. Having said that, as an American teaching in Japan, I found this book to be useful and informative. The author explains the competitive nature of the Japanese school and the vital importance of entrance exams as a motivational tool.
While I'm a big fan of Richard Lynn's work, I find that he focuses almost exclusively on quantitative data. Although that is often par for the course in studies of education and intelligence, I still feel Lynn does not sufficiently address the cultural issues behind expressions of intelligence (technological innovation and so on). Perhaps another book could address.
Essentially, the cultural analyst in me thinks that while East Asians have a high mean IQ and their school system is often ranked in the top three internationally, that issues of creativity, problem-solving and inferential thinking are not encouraged in their exam-oriented educational system.
To sum up, I am not all attacking this book as I still found it to be a great look at a society that has made education a national priority and produced impressive results with larger classes and less per capita spending than the US.