I have a daughter there, year 10. Over the last few years the school has moved into the big league as far as results are concerned. With an outstanding ofsted too. It suits my child but will not suit all, like most schools really. Head mistress is really visable which i like and the communication with the parents is excellent. There is lots of help at lunch times if you child is falling behind and most of the teachers seem great.
All that said dont send your child there if you think it will be less pressurised than other grammars. The girls work extremely hard and are fast tracked in ALL subjects. This can cause stress if the girls dont carefully plan their time. Luckly my daughter is coping well with it - but i dont agree with total fast tracking, they are so young and i feel for them but im a big softy