The rankings combined international test results and data such as graduation rates between 2006 and 2010, the BBC reports.
For Finland, this is no fluke. Since it implemented huge education reforms 40 years ago, the country's school system has consistently come at the top for the international rankings for education systems.
But how do they do it?
It's simple — by going against the evaluation-driven, centralized model that much of the Western world uses.