The given bar chart illustrates the average class size of primary and lower secondary school in south Korea, Japan, UK, Denmark, and Iceland in 2006 and compares it with the world average.
Overall, it is evident that the largest classroom size was in South Korea and smallest in Iceland in 2006.
In south Korea, Japan, Mexico, and Iceland had higher class size in lower secondary school (age 13 to 16) than primary school (age 5-10). Approximately 31 to 36 students had in secondary school and nearly 21 to 34 students was in primary school in these four countries in 2006.
In contrast, remaining countries had higher classroom size in primary school in 2006. In the UK and Denmark, the number was around 23 and 21 students in primary school and 21 and 19 students in secondary school, respectively. A similar trend was seen in the world average, with 26 and 24 students in primary and secondary school respectively.