Originally Posted by Gifted Mom
The report says "Based on national norms, DS's math skills are at a level equal to that of a typical X grader after the X month of the school year."

At typical X grader, given the same Y-grade-level test. So if it's a second grade test, and comes back as 5th grade, he did as well on second grade-level work as a 5th grader would be expected to, not "he's performing as well as a 5th grader would on 5th grade material," because they didn't test 5th grade material.