I know many schools decided not to even mention the SATs word, and so the children didn't even realise they were sitting a test. Result - perfectly happy, non-stressed children.
Then OTOH you have reports of children being sick with nerves, crying, and panicked.
Which makes me wonder, why didn't more schools follow the option of not saying a word about them? DH asked me this last night and I didn't know what to say. It makes sense, doesn't it?