The bar charts below show the number of hours each teacher spent teaching in different schools in four different countries in 2001

The graphs compare teachers in three types of schools in four separate countries in terms of the hours they spent teaching in 2001.
Overall, American instructors spent the most time teaching, whereas the amount of time spent teaching grew as the level rose.
It can be seen clearly from the chart that American teachers worked more hours than their counterparts in three different countries. This is especially true in upper secondary schools, where American instructors had approximately 1200 instruction hours, followed by Spain and Iceland, both of which had 900 hours.
In lower secondary school, Spain and Iceland had about 700 and 600 hours, respectively. In both nations, the number of teaching hours at the elementary level averages 600. By contrast, Japanese instructors spent about at the three levels and taught significantly less time, all at practically 700 hours.