I happened to go to Newstead, but too many years ago to make valid comments specifically about the school now.
However, I would like to echo all the comments saying that it really depends on the child.
I have been reflecting on schooling a lot recently, as we will soon need to think about secondary education for my child.
I had a fantastic time there. My talents happen to lie on the academic side, and I have always found learning easy. I never felt under any pressure there. However, if sport or beauty had been the things that were most prized at school, I’d have been sunk. I was a painfully shy, gauche, somewhat geeky child. The only things I was confident about was that I was very clever and quite good at classical music. For me, a highly academic single sex school was the correct environment. It gave me the opportunity to flourish and grow in confidence before hitting the wider world at university.
However, I very much feel that a couple of my friends didn’t meet their full potential because they went to Newstead. They were always near the bottom, observing others seemingly sailing through. I think this damaged their self confidence, leading to them underperforming in the public exams. In another setting, they would have been top or middle set, and possibly thrived academically. In hindsight, I can see that there was little support for those who were struggling. Of course, this may have changed by now.