Unfortunately, as my son attends an independant school, they do not do sats. So I have no evidence apart from test scores at school.
He has told me that there was a man sitting next to him, who kept getting up and down, talking to and pointing at the2 boys sitting in frontpapers. the boy in front kept slapping his feet on the floor. he said that he found this very distracting, is this grounds for an appeal?
Or just a huge complaint to the school which held the exam. I think that it's outrageous to be distracted in that way.
Sorry to hear of your disappointment.
You could try an appeal. The school side might say that any major distractions in the room would affect all the children there. They should also have something written in the invigilators log if there was a stranger in the room talking to these 2 boys. What was he saying?
Foot tapping might be dismissed as an irritant - it wouldn't make that much difference - a couple of points, maybe.
Did your current school give any preparation for the test? Coaching in 11+ techniques? Maybe even a mock one under test conditions (or mock common entrance tests)?
At the appeal, you may be 'competing' against other children from the same room (maybe the boy who sat next to your son), and who may have achieved a better score under the same conditions. You'll need to gather as much evidence as possible.
You, can complain to the school which held the exam, but they'd be wondering why you have left it until now rather than immediately after the exam. However, such a complaint will not alter the result - only an appeal can overturn that.