Graveney Tooting - experiences of the Upper stream?

[Dorisslurkingfriend]

I have a DD sitting the Wandsworth Test this week. She should get a sibling place but I think it's possible that she could end up in Upper unlike her elder sister who is in Extension. DD1 has had a ball, but what I don't know is whether the experience in Upper is likely to be similar, either in terms of the teaching or the social side - I've heard that there could be more local kids in Upper so harder to break into established friendship groups? If anyone can share any experiences I'd be very grateful.