I don't know if ACT/SAT scores can really be used to determine level of giftedness since they are not IQ based and I've always seen MG/HG/PG linked to IQ ranges (even if not standardized). Also, since the ACT/SAT is the same test given to kids regardless of age, it isn't normed to specific ages like IQ tests. I guess the younger the student, the lower the required score to indicate giftedness, which is why DYS has different requirements by grade (though would think it would make more sense to be by age?).
That was another reason for my surprise that they were used as a cutoff for DYS at all. I never thought of them in the sense of an IQ test. I thought of them more as something you could study for and do better on. Granted, I haven't done a lot of research into IQ tests but I thought the idea behind them was that they measured potential. So it would be hard to study for them. I hope that makes sense what I'm trying to say here.
