But he's not in the average bracket, he's in the below average that was the concern - even if he is it simply does not matter!
One of my DDs has a good degree from a Russell Group university and an MA and a wonderful life in a worthwhile profession. She was "behind" in so many things for the whole of her school career and to this day does not have a pass in GCSE maths. But she is happy and respected and loved and admired, pays her way and contributes to society in so many ways - and is raising a lovely family.
People would say she was below average at school - it did not matter one jot. She was who she was and is who she is and she is just great.
Tests are not the be all and end all.
We funnel our children down this narrow chute and burden them with competitiveness from such a tiny age. It does not matter whether your child is better or worse at something than the next child - it simply does not matter. It does not matter if they are above or below average - it simply does not matter.
There are so many posts on mumsnet from highly educated people who have come out the other end of the chute and are not any happier for it. They are harassed by demands, trying to keep up with everything and be as good as someone else and achieve, achieve, achieve ..........
Please don't worry about this silly test.
Tell us what s wonderful about your boy - I am sure it will be a long list!