According to the Organization for Economic Cooperation and Development, what is the most educated country on the planet as of 2019? To measure this, they are ranking countries based on the share of adult residents between the ages of 25 and 64 with a 'tertiary education,' meaning a two-year or four-year degree or education via vocational program. The leader had ~56% of the population with tertiary education.

Canada is the second largest country in the world (Russia being the largest) but only 0.5% of the world's population live there.