The given graphs column illustrates the average class size in six countries such as South Korea, Japan, UK, Denmark, Mexico and Iceland across primary school and lower secondary school. Furthemore it shows the proportion of world average class size in 2006. On the whole, it indicates the class size of South Korea in bouth groups (primary school and lower secondary school) is larger than other countries, which are about 34 for primary and 36 for lower secondary school.
Japan and Mexico make a balance in size for lower secondary school, which is 31. But about the size of primary school, japan is approximately 27 that is the same size as world average. The size of Mexico’s class in primary school is minor lower than Japan’s one, which is about 21.
Icland has the lowest size number not only for primary school but also lower secondary school, which are 15 and 17 respectively. Then Denmark and Uk have small size for classes in both leveles. Also their number is under the amount of world average. To indicate exactly, the number of primary school is nearly 21 and the size of lower secondary school is about 19, while UK is only a little bit more than this size.
Overall, the size of classes in South Korea and Japan are more than world average, by contrast, Icland has the lowest number for class size.