Why do Finnish pupils succeed with less homework?
How do Finnish youngsters spend less time in school, get less homework and still come out with some of the best results in the world?
The question gets to the heart of a lot of parental angst about hard work and too much pressure on children in school.
Parents facing all those kitchen table arguments over homework might wonder about its value if the Finns are getting on just fine without burning the midnight oil.
As the OECD think tank says: "One of the most striking facts about Finnish schools is that their students have fewer hours of instruction than students in any other OECD country."