Best Schools, Worst Schools, Happiest Students, Saddest Students (in the World)

This article is pretty easy to read and understand so I won't include any extra vocabulary section.

Did you know that students are happiest in Indonesia and saddest in South Korea? Why do you think this is the case?

Interesting article:

http://www.buzzfeed.com/jakel11/where-in-the-world-you-can-find-the-best-schools-and-the-hap?bffb