The table provides data on the average teaching hours for teachers in primary, lower secondary, and upper secondary education across four countries—Japan, Spain, Iceland, and the USA—in 2001.

In primary education, teachers in the USA spent the most time teaching, averaging 750 hours, while Iceland had the least with 590 hours. Japan and Spain fell in between, with teachers spending 600 and 650 hours, respectively.

Regarding lower secondary education, the USA again led with 1000 hours, significantly higher than the other countries. Japan and Spain showed similar teaching hours at 650 and 750 hours, while Iceland had the lowest with 610 hours.

For upper secondary education, the USA continued to have the highest average teaching hours at 1185, compared to Iceland's 915 hours. Japan and Spain had lower teaching hours, with Japan at 700 and Spain at 900 hours.

Overall, the USA consistently had the highest average teaching hours across all school types, while Iceland generally reported the lowest values, particularly in primary and lower secondary education. Japan and Spain had comparable teaching hours, especially in lower secondary education.