Studying more may not make you a top-performer

It’s 3pm in Finland. A bell rings, marking the end of classes in a middle school and time for students to go home. In a different part of the world, at the exact same time, other students are also just finishing  up classes. Except for these students, it’s not the middle of the afternoon, but night time, and they have just spent several hours studying in a “cram-school”, after a normal school day. More...