We had offers for our DD from a number of schools following 7+ (SHHS/CJS/Highgate).
Funnily enough, whilst we appreciate the senior school has great academics and is a fabulous school, it is the senior school which put us off rather than the Junior.
We found it very hard to overlook the bleak surroundings, the thought of an 11 year old self-commuting there and back and the overly "higher education" feel of the place. Headteacher was great but seemed more like a CEO. The best thing was the diverse mix of girls. The fact that the boys school just seemed to have a better location and facilities also didn't sit well.
Junior School on the other hand we thought was fabulous. Head is stellar: the best we came across. A small school but seemed perfectly formed with access to whatever would be needed. Approach to educational achievement and curriculum was spot on. I also don't work too far so logistics not too bad and I think the location is lovely. Building all now pretty complete.
I spoke to a LOT of parents at the school who almost universally loved it. I can totally see why. They said the obvious lack of access to space and fields and sporting facilities more apparent than real but there is no doubt that they make do given their location and this is a compromise if your child is mega mega sporty.
In the end found it hard to overlook the fact that the senior school was too compromised (for us) and that Highgate is practically down the road for us with facilities that are much much better, albeit which is more compromised on not being single-sex (at senior) and having less of a diverse intake.
We still debate whether we made the right call which is indicative of how much we loved CJS.