International mathematics assessments have established students in East Asia as among the best in the world and their U.S. counterparts as mediocre. What is not clear is why this "achievement gap" exists. The last major study to address this question, Stevenson and Stigler's (1992) "The Learning Gap," was published prior to…

Japanese compulsory education had been praised because of its equality around the early 80s. However, since the third wave-educational reform that began in the 1980s and still persists, it has been pointed out that there are disparities between schools in terms of students' socioeconomic background and academic performance. Although there have…

We reported the major findings of our research based on our own academic achievement tests towards elementary school and junior high school pupils in 2002. We then pointed out the fact that the differences of achievement between social groups have been expanded. Nowadays, that issue is seen to be one of the most serious educational problems in…