Here's a link to the current version of the test -
http://www.pearsonassessments.com/HAIWEB/Cultures/en-us/Productdetail.htm?Pid=E164CIt looks like this is an 'at level' achievement test. There is certianly some overlap between IQ and achievement test scores, and yours are certianly high. But it's hard to distinguish between kids who are thriving at grade level and kids who 'need more' (one definition of gifted) based on tests that are created to measure grade level performance.
That's why talent search organizations, such as
http://en.wikipedia.org/wiki/Center_for_Talented_Youthuse 'above level tests' - for example the College Board's SAT given to 7th graders to try and get an idea of 'who needs more.'
Interesting, no?
I think of 'giftedness' as more of a subjective experience, if you had educational needs that weren't met at school, that might have been due to giftedness.
Hope that helps,
Grinity