Yes, I always find it striking that Finland achieves its excellent results in global comparative tables (for what they are worth), despite formal schooling beginning at age 7.

At 18, they should be two years behind their British peers, one year behind Spanish or German students. But they are not. The idea that 'this must be 'learnt' by age 8, or 13, or whatever' is clearly and demonstrably nonsense.

But what I believe Finland does do is respect the role of the class teacher in terms of working conditions, class sizes, and above all a degree of curricular autonomy. Trusting teachers to teach, within a state system. I'm sure there is greater standardisation at higher levels, but it at least seems that in primary schools, a student-led approach is encouraged, which can only increase enthusiasm, engagement and learning outcomes, I would think.