Japan has one of the world's best-educated populations, with 100% enrollment in compulsory grades and zero illiteracy. While not compulsory, high school (koukou) enrollment is over 96% nationwide and nearly 100% in the cities. The high school drop out rate is about 2% and has been increasing. About 46% of all high school graduates go on to university or junior college.The Ministry of Education closely supervises curriculum, textbooks, classes and maintains a uniform level of education throughout the country. As a result, a high standard of education is possible.