How much homework did you have to do when you were a kid? I admit I didn’t have much, something that made my school have a bad reputation in my village. However, most studies and education experts seem to agree — there’s hard evidence that homework really does improve how well pupils achieve. Also, kids in both South Korea and Finland, the world’s best education systems, have less than 3 hours of school tasks to do at home per week.

At Ozicare Insurance, they got curious about how school performance and homework hours relate around the world, so they compared the education systems of several countries and came up with these results.