I'm not sure on the discrepencies btwn test sessions if they exist. We do have that situation with our younger dd, but both of her scores were gifted or pretty darn close. One was just highly gifted and the other not that high.
In our instance, the erratic performance btwn tests leaves me wondering if any of the scores are accurate. I am disinclined to take the lower scores as gospel. I am also not taking the high scores as gospel either, honestly.
My take away message has been that, if the child is inconsistent, don't make decisions based upon one set of test scores. I wouldn't do away with a 504 or IEP based upon one score looking like he didn't have a problem, for instance. I also wouldn't decide that my child is DYS material based upon one score either, for instance.
