Its been interesting to see that NSW has done better than all states but silly in the fact that they test all children at the same grade but our curriculums are not the same. When I taught in NT our maths syllabus was in line with WA and was a year behind NSW so a Yr 3 in NT/WA would be learning what they learn in YR 2 in NSW.
Until they get a national curriculum this test is flawed as not all children learn the same things at the same times or even start school at the same age.

Our school did really well but now there is pressure for us to make the children get better again for the next time! We are in the top region of NSW so it may be hard!!

TD its interesting that your son did the test at his age, is he in Yr3? It would be hard for him to understand some of the concepts I would imagine. There is no handwriting in it so his fine motor wouldn't affect his results- he has done amazingly well though for one so young.