Do you know how far above grade level they are tested? (ex. does the fourth grade one only go up to sixth grade material)
I would register for the grade the child is registered for in school. My DS is going to take it, but I registered him as grade 4 because he's only had a few weeks as a 5th grader and is in the trial period, not yet officially in 5th. Makes it kind of tricky, doesn't it. But the test is the same (8th grade level) no matter what grade you are taking it; and we should get to see how the scores compare to kids from various grades.
