My dd moved up to the 'feeder' school of her primary in September. Both are private schools - this is relevant. I didn't look around any others as this sschool looked great, nice staff, happy children, good results and so on plus I was led to believe most of the other children would move up so the transition would be nice for her. Turns out about half of the children left to go to other schools, including her best friend. She has a handful of friends but non on her firm class. Last weekend there was a party and every girl in her form class was invited except her. She was a bit upset but has friends in different form classes and overall is happy with school and doesn't really want to move.
Turns out that another school (also private) is a similar distance away from our house - just in a different direction. I've had a look around and it looked great, an older building with more character so it did seem a little fun down compared to her current school, the children looked happy, results are similar to where she's currently at and the fees are 4K a year cheaper!! We have 4 children and in a few years 3 of them will all be at secondary together, so will obviously save us a fortune.
Dd is worried about moving after just starting a new school and I definitely sympathise but it would seem that she hasn't fitted too well into her current form class anyway and perhaps this school might be a better fit. Would it be unfair to move her at the end of this term? I think she would settle quickly and the school did look nice.