Hamstersball, I am not going to say you are an awful person or condemn you for being concerned about the bahviour of another child. Neither am I going to tell you to stick your noseout. However, I do not think puting your nose in will
(a) do any good
(b) is likely to do harm to your own dd's future ( most may take a simiar view to those expressed by posters here, so the apporach isnt worth it).
However, I can believe what you say ( I am certainly not going to suggest you are poisonous, lying or jealous) . I think you clearly have concerns , although the ay you have expressed them may have got some backs up.
You say this is an independent school that your dd goes to?
Could you remove your dd and send her to another school? Isnt there another school available?
The beauty of the independent system is that you pay the fees and therefore you make the choice about how, where, and who your child is educated with. The who being both other DC and teachers.
I can fully appreciate how you may feel. I can also appreciate that you may feel it should not be your dd who has to move - but the reality is that it will be the most cost effective and practical way.
I had to take my DS out of a school which I felt had DC in it whose behaviour was an issue.
In the long term, if the school values its income, it will be swift in dealing with behavioural isses - and clearly they will be spotted if this child is as you state. However, often even independent schools haveto show some willingness to address and deal with issues before they can invite a child to leave ( or expell them if need be).
You may not feel you want to wait that time or you may feel it will be detrimental to your dd's education and also that your dd should not have to put up with it anyway - and I agree.
If you take your DD elsewhere, I expect there will be an exit interview / paper. State your reasons ( try to be polite and dont come over as you have here ) Just state that some pupils exhibit bullying behaviour and you prefer your dd to not have to work play and learn in that atmosphere.
You will have alerted the school to the problem.
May I finally say that you must tell them though. Too often in the recent past at the school where I work parents have decided not to send their DC or have removed their Dc but have not been honest as to the reasons.
Consequently we have been on a falling roll and not known why.Had parents been honest we could have been quicker dealing with it. We have dealt now but it left us with a reputationand we reap the consequencies as I speak.
Get your dd out of that school. Find a nice place for her and explain to the current school why. Thats my advice.