After looking at the line graphs of American and Japanese Math scores, it shows that the American math scores are positive skewed and the Japanese are negative skewed. The American graph shows the right tail is longer, which means it has few high values. The Japanese graph shows the left tail is longer, which means it has few low values. Leptokurtic or platykurtic you may ask; the American has a relatively peaked distribution making it leptokurtic, and the Japanese is widely dispersed making it platykurtic.