Name-changed for this, but I'm the parent of a Y7 DC at Kingsdale.
We live a pretty long distance from the school, but local options weren't great and DC has SEN and is very musical, so we had specific reasons for being prepared to travel for the right school.
DC got a full music scholarship and was high enough in the rankings to be pretty much guaranteed a place.
So far, I honestly don't have any complaints. The communications from the school are very good, level of discipline seems about right - no stupid rules, and the levels of homework tapered in so there was no nasty shock in week 1. DC had a lot of problems in the last 2 years of primary school - the class had a significant percentage of pupils with SEN, especially pupils with behavioural issues and there was so much disruption in class that I'm not sure they ever learnt anything (especially given DC's specific SEN that benefits from things like sitting near the front and very low levels of distraction). DC is much, much happier being in a class where the teachers can actually teach rather than spending their time trying to keep order.
Uniform can all be bought from Asda or similar, bar the house tie and iron-on blazer badges which you buy from the school, so it's relatively cheap to kit them out.
We've had two stints already of whole-class self-isolation this term due to Covid, and the school was ready to go with full lesson provision on Teams from the very first day, and there have been zero IT issues. The school also has a team who will make sure that no-one is left behind because they don't have access to tech or internet at home.
Music provision is superb - DC gets free 1-2-1 tuition, and the music lesson timetable swaps around each term so that they don't always get to avoid double-maths.
DC is not the most enthusiastic where school is concerned (very bright but not really academically interested plus the SEN issues) but we haven't had a single day of 'I don't want to go to school' which is a bit of a miracle, and subjects that were regarded as 'soooo boring' are now 'alright I suppose', so that is a step in the right direction.
We've already had one report card home with scores for every subject, a zoom session for parents, and I've had a lovely email from one subject teacher over half-term to let me know that DC is doing great in class, but appears to have misunderstood a key grammar concept and 'could I work through the following exercises over half-term to make sure that they are back on track for November'. I was pretty impressed that they are onto things like that so fast.
Due to Covid, a lot of the things that should have happened haven't - the transfer summer school ended up as a single day and sandwiches rather than a barbecue (but still more than a lot of other schools did); they haven't set for all the different subjects due to having to keep them in their bubbles - on the upside, it means that when they do set them, it will be based on actual knowledge of the individual child rather than their banding and SATS scores (that they don't have).
The extra-curricular programme is also not what it will be - choirs etc aren't allowed due to social distancing regs, and the outside providers of things like horse-riding (which is free along with archery, fencing etc) have various issues due to Covid safety. But, I very much feel that the school is doing the best they can under the circumstances.
There is also not much help on the SEN front due to the bubble systems, but DC has some very specific things in place that could make them stand out from the other students, and the school has handled that really well and that has massively helped DC's confidence.
On the gazillion GCSE's front, the school have said that if you want to do 18 or similar, then they will facilitate that, but if like my DC you have SEN then you can drop to 7 or 8 and use blocks for help with extra maths or English. It's very much geared to what suits an individual child.
We looked at a lot of schools (state and indie) given that we were prepared to travel a considerable distance, and Kingsdale was the standout choice for what we felt would suit our DC. They didn't know anyone else at the school, but already have a nice group of friends.
Hope this is helpful to those trying to choose.