Some of these responses are wild.
It's worth bearing in mind that the Ofsted and data driven education systems of today just don't allow for the kind of coasting that may have gone on when some of us were at school.
It is pretty mad to suggest that huge schools with 9 form entry are made up of families who have no real interest in their children's education. A school that the OP has clearly stated has lots of trips and extra curriculars is not going to have staff that leave every 5 minutes and don't go above and beyond- that's not how residentials, trips and clubs happen.
Suggesting that you 'just move' to get into certain schools is also a bit ott. Moving costs huge amounts of money and takes energy and resources. It also impacts on support systems, friendships and access to facilities etc. Being part of a stable community is a big benefit to young people's outcomes too and shouldn't be devalued.
The vast majority of university entrants each year will have gone to their local state school. Most people you know will have too. Huge areas of the country have very very little choice over where their children go to school - single institutions, no public transport etc.
My dc went to our local comp. It was RI and undersubscribed when they started. It has always had kind and engaged staff and lots going on. We supported and encouraged dc to put their hands up, join in and say yes to all offers. They've been on loads of trips, done dofe, loads of sports and been in fantastic plays. They have lovely friends and enjoy school. They have also witnessed and been exposed to some pretty tough stuff and had to endure some disruptive behaviour. They have made good choices and learned that they are very very lucky.
Their interests and abilities have been nurtured and they have or are predicted to achieve brilliant results. No worse and in some cases much better than my friends' dcs who suddenly became very interested in religion when their dc were in year 4, or those who have spent the last 5 years travelling for hours on buses at the start and end of every day, or gone to selective schools miles away and where they can't be part of any extra curricular stuff because there's so many overachievers to pick from and compete for places with.....
It is a massive oversimplification to state that if you just move or if you go to a school with different data that your child will thrive, do well, have nice friends and be happy. The vast majority of the wished for outcomes are down to a lot more than just which school they go to.