That's great and I'm pleased you've had a good experience. But I'm sure we all know people with differing views on GHS, and one can't ignore that, especially given that everyone knows everyone within the surrey bubble.
Far from supportive happiness, I personally know multiple families and girls with first hand or friend experience of hot house environmentals.
Tests, where if one does badly, they go under rhe radar and pretend that it never happened. Peer pressure to success and a general feeling, especially as girls get older that weakness and bad marks makes one weak.
There's plenty more examples too, and these are not fabricated examples either, but very real and very representative. I feel it important every year to remind prospective parents that they are signing up to a 'brand name', where the brand alone simply fuels obsessional parents who want their girls to achieve, highly, at whatever cost.
The pressure to aspire to Oxbridge comes from a culture and self fullfilling peer pressure to get there or simply fail.