If you get the situation with the NNAT resolved and he scores above whatever their cut-off is, would they accept him into that program? Or is the math score too low? We have a similar magnet program here and they give preference to kids who score above the 98th percentile in both reading AND math. If they make it far enough down the list of students they will take one or the other (reading OR math) but the "other" still has to be above the 90th percentile. Might be worth finding out what their acceptance criteria are before asking anymore about the NNAT. It does sound fishy--like he just didn't finish the test, or even come close, or was maybe picking random answer choices. Obviously the school should want to find out what a student's TRUE ability level is. It bugs me how districts do such high-stakes testing on little kids where if you don't get one score, you're out.