Think about it this way - 2% or so of the children who took this test did as well or better than your child in reading. 1% did as well or better in math. These may be different groups of children - i.e., the children who did as well or better in reading may have done worse in math, and the ones who did better in math may have done worse in reading. 11% of all children did as well or better in spelling. All told, 7% of the children who took the test missed only two questions or less on the total battery - some of them may have missed those two questions in the same subtest, and so scored lower in that subtest than your child.
