My DS6 recently had a reading assessment at school and received a percentile of 82. I'm not sure about the name of the test, but it involves reading a passage from his grade level (grade 1) and then answering questions. The teacher thought he would score higher so she tested him with a grade 2 test. He received 84th percentile. She then tested him with the grade she thinks he sits at, grade 5, and he received 85th percentile! Why is this happening? Why does he have as much difficulty with very basic books as he does with a novel?