DD is in Y7. When the forms were announced at the end of Y6 (for the move into the secondary school) some parents were unhappy and one girl was moved from DDs form into the other one. I was not particularly delighted with the form split but hoped that DD would make new friendships.
She has made some new friends but her main group of friends are all in the other class. These are the girls she spends break and lunchtimes with, but because she is the only one of the group not in the same form obviously misses out on lots of bonding time and some social stuff.
I was prepared to just carry on, but DD informed me yesterday that some new girls are arriving in Y8 and that the Head of Year had asked for volunteers to move from the other form. DD is concerned that 2 girls she does not get on with will move to be with two of their friends in DD's form, which could leave DD even more isolated. As the school is clearly going to mess around with the forms, I cannot decide whether I should go in and request that my DD is put with her friendship group. I know that friendship groups can change all the time so I don't want to request a move and then find that the group has dissolved in 6 months time.
I just remember when I was at school (a long, long time ago) there was one girl in the other form who always came into our form at lunchtimes and she looked at bit, well, lost. 
On the one hand I feel that she is less distracted by not being with her 'friends' in lessons, but on the other hand I don't want her to lose out on the social scene.
WWYD