Yes, you feel it helped your Dd - which is great. You don't actually know whether she would have done any worse in a comp. Many kids flourish on grammars, that much is indisputable.
Equally, you don't know for sure that your DC wouldn't have done better at a superselective grammar. I do know from what my DDs say, that being at the grammar makes them work harder because they forget that they are at a grammar and if they get an average mark in a test they feel haven't done that well which makes them try harder. They say they wouldn't feel like that in a comprehensive because even if it was an average mark in the top set, the other classes would have lower marks.
However, anecdotal evidence about your children or mine is just that.
But you asked what could be delivered by superselective that could not be delivered in the top set of a comprehensive so I stated an advantage for some children.I didn’t state that it applies to everyone.
The overall stats show that actually there is nothing in it when you compare selective education against comprehensive. Kent as a county does no better overall for having a full grammar system.
I stated that there are no pros to the grammar secondary modern system as in Kent. I just think that there are pros as well as cons to the superselectives.
So as a basis for £millions of investment in the system, our individual feelings about our children are interesting but not conclusive.
Again, I have stated that I don't agree with extra funding or expansion. That could potentially bring back systems such as the one in Kent. I was just answering your question about what a superselective grammar school can offer vs. a comprehensive.
My DH's comp failed him (though he did OK in the end) because it was a truly terrible 80s comp in an inner-city. He can clearly see the difference between his comp then and the new school now built on the exact same site but run on current methods and approaches. So,,,,out of date info is pretty irrelevant too.
What out of date info is irrelevant? As I said, I went to a good comp in the 80s so I’m not comparing bad comprehensives with superselectives.