DS took IQ tests at 9 and 10 years of age. His scores were high but not quite DYS level. His ACT scores at 12 were well over the DYS cut-off. I have taken this to mean that his SB5 and WISC 4 were affected by his age and that he hit a lot of ceilings (which it looks like he did from the subscores). I really would not trust IQ scores in HG+ kids after 9.
I would suggest you apply to DYS with the scores you have and portfolio items. I suspect the IQ scores he could get now would be inaccurate and disappointing. If you apply to DYS and they ask for more information, then check with them to see if they even want IQ testing or something else. Given to cost of IQ testing, I think you should save you money.
The other options would to be to take the SAT, which would give a second set of scores to DYS and potentially show consistancy (which is, I believe, something they are looking for).
