Thanks I really just needed to moan a bit. They will split up into at least two maths groups at some point (probably 3 since it is a composite class) which should help with the class work at least - I think it will be a while before they get to 4 digit addition with carrying or adding fractions. They have put him in a reading group one level above where he was at the end of last year which may be a little low but us a reasonable estimate.
It is funny isn't it how if your child is doing well at the low level they are taught everyone things you have nothing to worry about.