I'm having my 8 year old 3rd grader take it this year for similar reasons. He took the SCAT last year and maxxed it out, so there is no reason to repeat that I don't think. My DS LOVES tests, even timed tests, so that part is not an issue for him, therefore I can't advise you on that! It is a bit of a pain to get him registered for it as a 3rd grader. We are doing it through C-MITES in PA and we live in FL. Our local talent search is through Duke TIP and they will not bend and let a 3rd grader take it through them.