The bar graph presents data on the average number of children in two age groups in classrooms in different nations.
Overall, there is clear variation in average class size between countries, while differences between the two age groups are comparatively minor and class sizes are highest in Japan and Hong Kong and lowest in Russia.
Focusing on Japan and Hong Kong, both countries record the largest average class sizes overall. In Japan, classes of 13-year-olds are slightly larger than those of 9-year-olds, whereas the opposite pattern is seen in Hong Kong, where younger children are taught in the biggest classes on the chart. Despite this difference, class sizes in both countries remain considerably higher than in the others shown.
Turning to the remaining figures, Russia records the smallest average class sizes for both age groups, with little difference between them. By contrast, the United States shows moderately sized classes, which are noticeably larger than those in Russia but still far smaller than in Japan and Hong Kong. The global average follows a similar pattern to the United States, with class sizes remaining at a medium level and showing only minor variation between the two age groups.