1. The Republic of Korea
Population with tertiary education: 69.0%
Finally, on the top of our list of top countries with the highest literacy rates in the world in 2017 is, believe it or not, the Republic of Korea! Primary school dropout rate is really small with 0.4%. The ratio between pupils and teacher is around 17, which is a perfect environment for studying. The government expenditure on education is 4.6% of GDP.