My ds is in year 7 at SWBGS (so I guess a 1:4 chance of being in the same class as Flatsix's DD) and he is loving it (although it's a big step up from Primary and a big change with his year group being pretty much the same size as the whole of the small state primary he's come from).
I don't know where abouts you are berks_mum but it's worth checking the allocation profiles if you're not in the bit of berks which is in catchment as they don't go very far out of catchment (this year the furthest OOC allocation was 6 miles from the school).
I think it's a lovely little school - the expectations are very high and the workload starts from day 1 though (ds had 5 lessons on Friday and was set 5 pieces of homework). There is probably more dance / drama then in some of the other schools which is nice - it's the house dance competition soon (participation compulsory). Sports seems great and inclusive - hockey is the big sport - in year 7 I think around 45 boys go to the after school hockey club (out of around 60ish) and I think girls is similar. It was the interhouse cross country the other week - again participation compulsory. Ds likes the vast majority of his teachers although some are mean, nasty and unreasonable
With the children being all so local and it's fantastic that ds's friends aren't coming from miles and miles away it's worth bearing in mind that the cohort is not as diverse as you will get in some schools which does mean that the children are existing in a very "Marlow" bubble and not meeting people from other backgrounds / cultures as much as they would at, say WHS or JHGS. The vast majority of the children walk to school I would say, a chunk go on the train and another chunk (including my ds) on the busses out to the villages.
The Space Camp looks fab but it bloomin expensive!! As are quite a few of the trips (Dance trip to New York for instance). The current year 7 are the first year group who have to take a Chrome Book to school and a reasonable amount of work involves this - also some homeworks are emailed to them / set via things like Kerboodle.
They all do triple science but I think that's the case in all Bucks grammar schools. Everyone does French in yr 7 and in yr 8 the school allocates them either Spanish or German. Interestingly (well to me anyway
) they seem to be pretty much the only school where RS isn't taught in yr 7.
Re the mumsnet post re skirts / manners - it's v old and I think written by someone with an agenda - it certainly doesn't represent my experience (or that of my friends who have children in all different years) of the school. The skirts seem a decent length and the children (boys and girls) look smart and seem v well mannered - stand when teacher enters room etc.
Open evening this year was absolutely rammed and scarily full I thought - in real life the school feels much cosier.