My daughter is in y8 at TGS. She is happy there so far.
I was worried it would be a hot house and amplify her tendency to perfectionism but I have found she's doing similar amounts of homework to her friends at Coombe Girls. The school pastoral system has been very good so far. They even had a parental talk about helping with perfectionism and resilience alongside other useful stuff like neurodiversity ones. It feels like they want to support the girls wellbeing as well as results, but let's see how things go once we get to exam years.
Y7 transition was great, so much is done to help them settle, more than her friends seemed to get in Coombe girls (though they are all quite happy there too I believe).
Lots of stuff to help them learn how to revise, how to organise their time so they don't just expect them to inherently know all this. Frequent end of topic/term tests (similar to friends though, maybe this is the norm in state secondary). The frequency almost makes it less stressful for my daughter, seems like lower stakes and keeps her on top of things.
The school is hot on things like online safety and anti bullying.
Teaching has been good, and feedback from teachers has been easy to get.
She actually had 8 girls from her state primary go there but isn't in a form with any of them. She's made a lovely group of new friends who she commutes with and they meet up occasionally to go to the cinema or plan group activities together. They are of varied ethnic backgrounds, no issue with socialising. Similar socioeconomic background , I think it is not hugely diverse in that regard.
She does piano lessons in school, loves her teacher.
For sports, she did various clubs, netball, trampolining and had the opportunity to go to a few comps but she is in a local gymnastics squad and competes with them , it's better than what a school could offer in terms of specialist coaches and equipment.
She's done a Latin competition and some computing competition as well. It wasn't pressured, they were group things she and her friends seemed to be doing it for an excuse for a sleepover to plan their submissions!
Things aren't swanky. But we like the school. We weren't in a position to consider a private so I have nothing to compare against...