The given bar chart provides information on how many hours teachers spend their time at three types of schools in Japan, Spain, Iceland, and the USA in 2001.
Overall, lower secondary and upper secondary teachers in the US taught more hours than the remaining figures in the other countries. In addition, teachers in the primary school taught slightly the same number of hours compared to other nations.
In the chart, the number of hours taught at primary and lower secondary in Iceland was the lowest compared to other figures, which is slightly over 600 hours. Notably, the remaining figures in Iceland undertook a significant workload of just 900 hours. In terms of Japan, teachers at all levels taught between 600 and 700 hours, with hardly any notable gap between the 3 levels.
On the other hand, primary teachers in the US and Spain taught similar hours, at around 650 hours. Regarding lower and upper secondary teachers in Spain, they worked 750 and 900 hours respectively. However, the figures for lower secondary and upper secondary teachers in the US had a significant variation compared to Spain, which is marginally three-fifths as high as the number of hours each teacher spent teaching in the same category in Spain.