Japan spent the least on education in 2010 among 30 member nations of the Organization for Economic Cooperation and Development that had comparable data, a report by the group showed Tuesday.

The ratio of public spending on education to gross domestic product remained almost unchanged from 2009 at 3.6 percent for Japan, which ranked last in educational spending for the fourth consecutive year.

Noting that the ratio of private funding for kindergartens and colleges has been high in Japan, the 34-member OECD encouraged Japan to increase public spending by saying educational investment is beneficial to both individuals and society.