Thanks everyone.
She knows a few people in other years, but no one in her own year. We thought she would be joining a good friend who moved in Year 7, but maddeningly they have now decided to move towns, so we've lost that contact. However, there will be about 100 kids joining in Year 9 as they have a second intake from a middle school which goes up to year 8. So, she won't be the only new girl, but the only one coming from her current school, and 90% of the other kids will be coming together from the feeder middle school.
Its difficult to say what DD feels about it, as she is definitely into the teenaged monosyllabic stage. She doesn't hate the idea, and has agreed to go, as we made it clear we would not force her. She is concerned about losing contact with her friends, worried that she may not be able to do the same GCSEs that she has selected (although I think she will) and miffed that she will have to get out of bed earlier in order to catch a bus rather than just strolling 5 mins around the corner.
However, I think that she is also a little bit excited about it, and recognises that she is not being stretched where she is. Her current school does a fab job at bringing everyone up to a good base level, but has little energy left for the brighter kids. Once you've met the required standard, its case dismissed whilst they concentrate on those who need more help.
The new school is still a comp, but it used to be the grammar school and still maintains that sort of ethos, with a big emphasis on doing the very best you can and taking each kids to the highest level they are able to reach, rather than gov-prescribed levels.
We have two other DCs coming up behind, and another factor is that having a sibling in the good school will help them get a place. While DD1 & DD2 are self-motivated and work hard, DS redefines the word lazy. I know that at the local school he will sit back and do nothing, as he will reached the required level very quickly, but then do nothing more, whilst the other school will not let him off the hook.
I think we have now decided that we have to go for it, as to turn down the place seems a backward step. However, I am still very anxious that we may be doing the wrong thing and that we may be pushing our happy, contented girl too far.
Tough, this parenting malarky, isn't it?