There are many differences in mathematics education between the US and Japan that definitively impact the performance of students in both countries. The methods used in the delivery of information to the students, the planning leading up to the implementation of those methods, the interaction (or lack thereof) among teaching staff within a subject and/or grade level, and teaching styles themselves are like night and day. Most curriculum is text driven in both countries but, thanks mostly to the centralization of curriculum in Japan through ....