It would not be wasted in aspiration all families that value education at all if their children needed the extra support of a couple of one to one sessions a week, or needed the money to be able to join their classmates on a residential trip that their family can't afford.
I see this situation every day, there are children getting support that they don't need so that a school can prove that they have spent money improving a child's potential and I see children who need more support not get it simply because their name isn't on the FSM list.
Anyway, I didn't mean to derail the thread with my feelings on the pupil premium, so ill get back to grammar schools!
I agree that access to grammar school is flawed, but I think that's because some areas don't have enough places and some areas have too many.
If all children had access to a grammar school if they would benefit from it and would suit that type of education, then none would be missing out. If all grammar schools aimed to take the top 5-7% of children whose parents actually want a grammar education for that child, then the effect on other schools would be minimal. If all other schools offerd enough academic subjects and stream properly, then all children will get the education they deserve and there won't be a problem.
I think the issue at the moment is that grammar schools in GS areas take too many children, and areas that only have SS or no GS at all don't have enough places for the children that would benefit from them and are suitable for them.