In the 2011 census, about 73% of the population was literate, with 81% for men and 65% for women. This compares to 1981 when the respective rates were 41%, 53% and 29%. In 1951 the rates were 18%, 27% and 9%. In 1921 the rates 7%, 12% and 2%. In 1891 they were 5%, 9% and 1%,[446][447] According to Latika Chaudhary, in 1911 there were under three primary schools for every ten villages. Statistically, more caste and religious diversity reduced private spending. Primary schools taught literacy, so local diversity limited its growth.[448]
The education system of India is the world's second-largest.[449] India has over 900 universities, 40,000 colleges[450] and 1.5 million schools.[451] In India's higher education system, a significant number of seats are reserved under affirmative action policies for the historically disadvantaged. In recent decades India's improved education system is often cited as one of the main contributors to its economic development.[452][453]