My son was tested on the RIAS and did very well, but scored better on the WISC...I think that was partly the difference in levels of training for the two differing testers...
I wish they would have told me the actual number for the RIAS but they just gave us % and said we weren't allowed to have more, if he hit the ceiling, I'd say its pretty darn good though!As aculady asked, what exactly are you against when you say acceleration, if you don't mind? Do you think the normal classrooms, or whatever gifted program your son may have is working, and teachers are working with him...if so then it may not be necessary. We found we had to accelerate because no matter the accomodations, it just wasn't enough, and sadly still isn't enough after the skip. It really depends on the child, and the support they have at school!