Education is highly valued in the Israeli culture and was viewed as a fundamental block of ancient Israelites. Jewish communities in the Levant were the first to introduce compulsory education for which the organized community, not less than the parents was responsible. Many international business leaders such as Microsoft founder Bill Gates have praised Israel for its high quality of education in helping spur Israel's economic development and technological boom. In 2015, the country ranked third among OECD members (after Canada and Japan) for the percentage of 25–64 year-olds that have attained tertiary education with 49% compared with the OECD average of 35%. In 2012, the country ranked third in the world in the number of academic degrees per capita (20 percent of the population).