We're another family that considers tests a tool, only useful if there's something you're working on. We opted out of screening DD for giftedness at age 5, because she'd have had to hit 2.5 SDs to qualify, and failure to qualify would render her unable to take the test for another full calendar year. At age 6 the requirements went down, so she took the RIAS, and whatever achievement tests they used, and qualified easily.
The next time she tested, she was 8. We pulled her out of public school as a 2nd grader and skipped her into 3rd. As a way to inarguably establish her completion of 3rd grade, we had her take the 3rd grade iLEAP (it's a Louisiana thing) and the SB-10 at the end of the year.
DD loves taking tests, but it's probably smart not to overdo it.
