DS's school has 1.5 classes per year with the split being done on ability. So there is a Y1, Y1/Y2 and Y2 class in KS1.
DS in Y1 and is a June birthday and has struggled in his mixed Y1/Y2 class with lack of friends. He is the only Y1 in the class on the SEN register and all of the rest of the Y1s appear to be very sociable.
When I spoke to the SENCO to ensure that he will get a different teacher next year, she indicated that he will be in the Y2 class next year due to his ability. When I mentioned that I thought that as his social skills were clearly less mature than his peers so maybe despite his academic ability he should be in the Y1/Y2 class again so that he could socialise with the younger children, she gave me this 
look.
The problem I guess is that on one hand I am questioning with the EP that I think that he is capable of more than he is at present due to sensory issues and lack of support and on the other hand, I am happy for him to be kept with lower achieving peers. His levels are a dubious 1B for writing and I agree with their assessment of 1A for reading and 1A for maths. So not bad but not great......
WWYD??