@Acquacup
Going to a grammar school gives children a massive advantage, surely. Mixing with bright, motivated and well supported peers. On average no doubt better teachers. So much focus on the academics. Expertise in teaching bright children. Setting, to the nth degree, even though only high ability children get into the school in the first place. High expectations and knowledge and experience on Oxbridge, etc.
My DC2's comprehensive obviously takes all the local children, and it doesn't set at all. Not even for maths and English.
Yes, there is advantage, yes, of course there is. Downsides too, of course. Someone has to be at the bottom at the grammar. DS2 doesn't shine or stand out, but he did at his state primary. Not sure it's great for his confidence.
I think I'm just so proud of my DS1 for doing so well through his school life, when we come from an ordinary background, that it irks me when I hear the opinion that grammar schools give children an unfair advantage at uni. DH came from one of the most deprived parts of the country. He never went to university. Barely scraped through his A-levels. He was a late bloomer, went to a really shit state comp where plenty of people ended up in prison. I just went to an ex poly, crappy course. We didn't have the income for a private education for our kids, not even a tutor for entrance to the grammar. DS (both of them) got there on their own ability. It's a bit galling to hear that they have an advantage from Oxbridge's point of view. I mean, I know they are getting a great education, but you don't last in that school if you don't put the work in and aren't bright enough to keep up.
DS1 still has to fight against the advantage that private sector students have when he enters his subject competitions. Many of the kids he's up against are from schools like Westminster - they are much more socially confident, much more polished at giving presentations & meeting the judges etc, seem to have much more practical & monetary help with projects etc.
Hell, I guess I'm just damned proud of what he's achieved so far and would hate to think that being at a grammar will hold him back at the uni application stage.
Anyway, I don't want to derail the thread and make this into a grammar v comp thing. I guess I just should have stuck to the being proud of my kids part! 
I hope EVERYONE on this thread hears good news soon.