Which of the following nations ranked second in the world in terms of sending the largest share of its people to college?

Every year, institutions in the United States dominate rankings of the best colleges in the world.

Of the top 10 best universities in the world, eight are located in the U.S. But despite having some of the best educational institutions on earth, the Organisation for Economic Co-operation and Development (OECD) ranks the U.S. sixth for adult education level.

The OECD defined a country's adult education level as the percentage of people between the ages of 25 and 64 who have completed some kind of tertiary education in the form of a two-year degree, four-year degree or vocational program.

Here are the 10 most educated countries:

10. Luxembourg

42.86 percent

9. Norway

43.02 percent

8. Finland

7. Australia

43.74 percent

6. United States

45.67 percent

The U.K. is home to three of the world's top 10 universities, according to Times Higher Education, including Oxford University.

Joe Daniel Price | Getty Images

5. United Kingdom

45.96 percent

4. Korea

46.86 percent

3. Israel

49.90 percent

2. Japan

50.50 percent

1. Canada

56.27 percent

Canada tops the list as the most educated country in the world. According to the OECD over 56 percent of adults in the Great White North have earned some kind of education after high school.

During the 2016 World Economic Forum in Davos, Canadian Prime Minister Justin Trudeau suggested that Canadians' education was the nation's greatest resource.

"We need education to enable people to learn, think, and adapt," he said. "Our natural resources are important, and they always will be. But Canadians know that what it takes to grow and prosper isn't just what's under our feet, it's what between our ears."

Canada is followed by highly-educated countries like Japan, Israel and Korea.

The United States ranked sixth on the OECD's list. According to the OECD, 45.7 percent of American adults between the ages of 25 and 64 have completed some kind of tertiary education in the form of a two-year degree, four-year degree or vocational program. The U.S. Census estimates that about 33 percent of American adults possess a bachelor's degree or more.

Like this story? Like CNBC Make It on Facebook

Don't miss:

• The 10 best high schools in the country
• New study from Stanford University finds that positivity makes kids more successful
• Natty Light is giving away $1,000,000 to help grads pay off student loans

Which type of schools provide freedom to try out new policies and programs?

Which policy requires school officials to severely punished or expel any student who brings a weapon alcohol or some other drug to school?

Which of the following is true about economic outcomes of people who have the same levels of education but are from different social classes?

Which concept refers to formal instruction carried out by specially trained teachers?