Other than boredom in math and spelling (which has to be done as a whole class)
I just want to pick you up on this - do you mean the teacher is telling you these have to be done as a whole class, or are you just assuming it? Because these are two areas where my DS6 is getting individualised work, and I think this is pretty common, actually. He gets his own group of spelling words (sometimes words he's spelt wrong in his written work, sometimes a printed sheet of words with a particular pattern that he and a couple of other good spellers in the class get together). For maths his teacher uses a lot of different material, mostly provided by the school but also including the odd ALEKS worksheet from home. It seems to be going well. If these two are the only problem areas for your DD, I think I'd be pushing for differentiation in those two areas, and only arguing for whole-grade acceleration if they try telling you differentiation is impossible. (You might find that differentiation becomes less impossible once they find out that's your fall-back position, too :-)
