I was thinking of dd as being 'normal bright' rather than 'super bright' so didn't expect much except perhaps a better reading group, but there was nothing unless the class teacher bothered to go that extra mile.
As a teacher, though, I'd say that if a child is intelligent, it really takes some one/thing standing in their way to stop them from learning. Even the ones who try to be 'cool kids' just get drawn in the moment that their brain is engaged. They also go through growth spurts & plateaus, just as they do physically, so they constantly 'leapfrog' each other. It is quite rare (but obviously happens) that a child really comes across as a 'genius' type.
I teach in a school for bright kids (there's an entrance test) and would say that they all come across as bright & articulate, but even there only 5% strike me as 'super bright' - the kind that will make me really have to up my game to challenge them (8th Grade).
The tragedy is, that I think there are huge numbers of kids who under-perform in state schools, because they are reasonably bright but class sizes, disruptions, parental attitude, resources etc work against them. Of course, many of them face these obstacles, but I'd love to see better education for everyone. The truth is, that state education, whilst being 'quite good', is actually very good value for money, rather than being top of the range. Even a 'good' state school is almost always like that because of the parents, not the school/education authority.
It's a bit like shopping for food. Some people can't afford to access anything much except Iceland/Happy Shopper (not so good comp) & have a limited range. Other people can pick & choose from Tesco (a good comp, prob a majority), with some extra bits but still quite basic. Quite a lot, but not all, find Waitrose quality (minor private schools), and a very limited number get a hamper delivered by Harrods (Eton).
I think that there are a lot of people shopping at Tesco who would benefit from a Waitrose experience.