doormat, glad your son is having an OK time at school. I do think bad behaviour goes in phases and no one, teacher, child or parent can really say with 100 accuracy what is the cause and effect.
Naayie and sofiaamis, I do think incessent fidgiting can be naughty sometimes, at least with older children. I have certaily seen my son fidgit with pencils, sharpeners etc defiantly on occasion at home ie when he's procrastinating because he does not want to do his homework. And this is not because he can't do it, or that he is too tired to do it, or has an unusually short attention span, or it hasn't been agreed in advance - it is simply because he is being lazy
If that situation happens at school I think it deserves punishment.
sofiaAmes, I know written down here the schools's occaiaional hummialition tactics look a bit shocking. My dh and I were on the point of asking to see the teacher about this. I think if my son had not settled in so well, liked his teachers so much and was so happy there, it would have crossed my mind to move him. But I know he is a confident, outgoing sort of person who tends to to brush off scoldings from teachers. He doesn't take school things too seriously. If he was a different type of child, I presume (and hope) the school would have used different tactics on him.
I know, from his point of view, the worst thing would be another school move. He is living the reality, I am not. A case of sacrificing my own liberal ideals in the interests of my son, I guess.