Improved Version
The bar chart compares the average number of students in a class at ages 9 and 13 across five countries.
Overall, Japan and Hong Kong had the largest class sizes for both age groups, while Russia recorded the smallest. In addition, class sizes at age 9 were generally slightly higher than those at age 13 in most countries, except Japan.
In Hong Kong, the number of 9-year-old students per class reached a peak of about 35, while the figure for 13-year-olds was slightly lower, at around 32. Conversely, in Japan, the largest class size was observed among 13-year-olds at about 35, whereas classes of 9-year-olds averaged roughly 32 students. By contrast, Russia showed the lowest figures, with both age groups having approximately 12 students per class.
In the United States and in the global averages, class sizes were relatively similar. The USA had around 22 students per class at age 9 and approximately 18 at age 13, which closely reflected the global averages. Compared with these figures, Russia’s total number of students for both age groups combined (about 24) was still lower than the number of 9-year-olds in Hong Kong alone. Overall, Japan and Hong Kong had significantly larger class sizes than the global average, while the USA tended to maintain relatively small classes.