I'm interested in this thread as well. We had DS9 tested at age 7 because we were trying to see how "out there" he was, and whether or not it was likely that the current school could accommodate him.
We have less motivation to test our current DS7 because the school is already trying to initiate change at our request. So, we'll probably wait until he's taken the standardized tests in 3rd grade, which may qualify him for talent searches and we'll start then. So, it's likely we'll not know whether he's gifted and how gifted until then.
DS7 is obviously bright, but not the voracious learner that DS9 was (from birth, it seemed), so he's not so obvious at this point. I wish we could find a cheaper way to get him tested, though, because I frequently worry that we're so focused on DS9's academics that maybe DS7 doesn't end up getting what he needs.
