Yes. I think the teaching and expectations in all primary schools should not be opaque. I was new to the UK primary school system and I found unfairness embedded in the system since there was a lot of inside knowledge of curriculum, how far ahead, 11+ marking scheme etc and luckily met with some parents willing to share. Some schools were very transparent and they were mostly boys schools. Some lovely, helpful folks vs some crazy, competitive underhand ones…quite a spectrum.
So from this article, the top sets for SAT, unless preparing for 11+ grammar or private has a wide gap before entering secondary schools. What a waste of young kids’ curiosity and talents.