I never knew they could score tests like taht, just seems so unfair.
I understand your frustration, but actually the percentiles are not unfair.
Think of it this way: if 10% of the kids get a perfect score on a test, is it accurate for all of these kids to think that they are in the 99th percentile? Of course not. They're all in the top 10%, and since it's impossible from that test to tell where they fall, then all that you can say is that they are at the 90th percentile or above. That may sound unreasonably low, but remember that NONE of the other kids of the same age has a higher percentile. I'm sure that the schools understand this (and they probably even get the raw scores and know when a kid got a perfect score). In those cases, if they need to distinguish between all of the kids with scores in the 90th percentile, then they would look at other factors.
It seems to me that what is unfair is giving too much weight to a test that is clearly too easy for the student population being tested.
I hope it all works out for you and your DS.
