As a preschool teacher, stuff like this is always nice to read. However, there's also studies that show that kids that go to forest schools do quite well in school, compared to kids who go to more "academic" institutions, so I have my doubts about the importance of structured classrooms.

Generally I think this might support the idea that preschool- and primary education systems work better if you don't separate the kids based on class or academic ability? I'm pretty sure that's more normal in the private sector in the US, than in the public preschools? I'm not American, though.

Researchers followed 400,000 kids

But are better grades and test scores just representations of being better at pleasing the grader and taking tests?

My own half-assed 'study' of watching my fellow kids and some generations after proved (to me) that having better grades and test scores doesn't mean having a better life after.