The bar chart shows the average size class in primary schools and lower secondary schools in 6 countries compared to the world average in 2006

This bar graph illustrates the number of students per class in primary schools and middle schools in the surveyed period compared to the world proportion.
Overall, it can be clearly seen that South Korea had the most pupils in each class in primary school. On the contrary, Mexico seemed to have the least number of students
In primary schools on three continents, South Korea, Japan, and UK, the number of pupils was much more than the average, ranging from nearly 30 to nearly 35. In contrast , the class of Mexico, Denmark and Iceland experienced the lowest size than the world , about 20, 21 and 23 respectively.
The size of class in secondary schools in South Korea, Japan and Mexico reached the highest rate compared to the world data, about 36, 34 and 30 students, respectively. Furthermore, for comparison, the number of students per class in UK, Denmark and Iceland was the lowest.