So glad to have found this thread..having the same type of dilemma with my DS! We had him tested at age 5 (he's now 8) with WISC IV (I think) and he was highly qualified for the gifted program. Our districts gifted program starts in 3rd grade, which is next year for him, but he had trouble staying focused on the assessment test the district administered. And they won't accept any outside tests! So we have a kid who needs more advanced work according to his teacher and a qualifying score to get it, but because he can't do the test their way, we are apparently out of luck!
So sorry I don't actually have any ideas to help you, but I'm thrilled to try some of this online testing to help him get comfortable with the process and try again later I guess.
