Could you do the testing privately, so that you could work with a tester who would be responsive to your concerns (and who would use a test with sufficiently high ceilings, etc.)? One potential problem with school testing is that if they are simply looking to see if your child simply crosses some arbitrary "gifted threshold," you might not get a full test or a test with adequately high ceilings (or they might not feel the need to continue the test once they've reached their "magic number"). Also, if the test is incomplete, your DD might not be able to take the same test version for a year or two (if you later decide to have it done privately), and you could be more limited in your testing options.
