Help! mixed ability + work in class without challenge, can you give me advice?

[GabriellaSun]

Hello,
I feel that my dd's school is a mess...
This term has a new headteacher (third in 3 years!) and new teachers because a half of staff (approx.) left the school at the end of last term.
We just had a meeting with the new headteacher and we were told that the classes has been changed from setting by ability to mixed-ability and I'm not sure if this new idea could be good for my dd.
My daughter is in year 4, she was the top group since year 1, now she has really easy homework and she hasn't a real challenge in class.
I asked her "what have you learned these weeks?" and she answered me "Nothing. We have a recap because some children have problems with various topics"... nothing? they have 3 weeks in classes! , I think that she will feel frustrated when things get repeated over and over.
Am I being unreasonable to think that the change would end up being highly detrimental to children in the higher groups?, Can I to ask for more challenging work?, Is it better consider a new school?
Any similar experience?, please, can you give me your opinion?, I lost the compass!
Thanks in advance.

I'd start by arranging to meet with her teacher and saying that you're concerned by the changes, and want to give her the chance to let you know how she's going to make sure all the pupils in her class are working to their best ability.

See how she responds, and how happy you are with what she says, then decide how to play things from there.

If it's a completely new teacher, it may be taking a little while to get into her stride and get a feel for the children's abilities, but by 3 weeks in she ought to have a plan of campaign of how she's going to teach this class.

If you're happy with what she says, then give it another week or two and see if you start to see some results.

Thanks AMumInScotland, now, I have an appointment for tomorrow with her teacher.
I hope to have good news after that, thank you very much, you helped me find a way.

Mixed ability teaching is a red herring here - the school still has to provide differentiated teaching to accommodate children of all abilities whether they group them or not. OFSTED take a very dim view if able children are not challenged and if struggling children are not supported - the school must know this. I would definitely ask (pleasantly) how the teacher is planning to provide differentiation in her teaching and then see what happens.