Bolingbroke all the way!
I have two children there and it's an outstanding school, no more strict than others. There's an excellent pastoral system and I also have experience of SEN support for one of my children. It would be fair to say we've had our ups and downs (which could have happened anywhere), but school has been incredibly proactive and supportive; they were truly amazing during over the last 18 months with lots of 1:1 support for my bright but struggling-with-lockdown, GCSE child.
It's still a relatively new school, but I think their exam results speak for themselves; they are consistently the top performing non selective school in Wandsworth (GCSE's) and although only 3 years old, the 6th Form has sent pupils onto many of the major Universities, Oxford, Cambridge, Imperial etc. The 6th form recently benefitted from a privately funded donation and is now a state of the art studying environment. It's oversubscribed this year I understand.
They've also just won the 2021 National Teaching Award for Digital Innovation (Bronze Award - 3rd out of all entries) for their Distance Learning Provision which was outstanding. All pupils also now get given a laptop for school work.
It's not as big and doesn't offer as many subjects as Graveney at GCSE, however the smaller set up suits many kids (appreciate some would prefer a busier environment). A Level subjects are also more limited than say Graveney, but it's very academic and the subjects they do offer, are delivered at a very high standard (the A level minimum entry is 6/7's in GCSE subjects). The teaching staff are very approachable and will always respond to emails.
Music and drama are a big part of school life and all Year 7's get free music tuition for their first year at school.
Sport isn't as big an offering as some schools as they have limited space, but most kids who thrive at sport are able to do some at school and also do external clubs.
I know many kids at both schools most of whom are happy and settled, and often it comes down to personal choice and where you live, but Bolingbroke is becoming a much more sought after now it's had a few years to prove itself. It's definitely worth a visit on their next open day. Good luck with your choices - always a stressful time!