Why do South Korea's students do so well?
8 October 2013 Last updated at 12:53 BST
South Korean students regularly rank high in league tables when it comes to academic achievement, after making huge progress in recent decades.
Dr Jasper Kim is a professor at the Graduate School of International Studies at Ewha University in South Korea.
He says the students have a strong work ethic, but that success comes at a financial cost to their families.