I had the same with my son Bernie. I know he was no angel, but his voice was the one that was always heard over the others, so it was him that got into trouble. Also, if another child hit or kicked him, he would always hit or kick back, and he was the one that was always caught.
I'm not saying that he didn't do anything wrong............oh believe me he did!! But he got himself a label.
I fought for ages saying that I thought there was something wrong with him, they told me I was talking rubbish!! I took matters into my own hands though, and through my GP I got him seen by a specialist. Turns out he had ADHD, and needed medicating. He also got a statement to help him at secondary school, and ended up going to a specialist boarding school who could help him.
Today he is a very different child, infact a young man.
I'm not saying that there is anything wrong with your grandson.......this is all coming out wrong!!
What I'm trying to say is that some schools need to listen to the parents too, as sometimes they are right. It is the parents who don't support there children, and take no interest in what is going on at school that need to learn in my book.
Congratulations to your Grandson on his worker of the week award
Although that said...........I have a younger daughter who went to the same school, and she was not labelled at all..........it didn't matter who her big brother was......she was treated as an individual.