I don't have much knowledge about scoring tests, but I do know that my son who is 6-years-old scored in the 99.9th on his test, and he HATES memorizing things! Hates it! (He also hated memorizing spelling words last year in school.) He can multiply and divide by skip-counting, but he has yet to memorize his multiplication tables. He's learning them by singing songs now. Hopefully it will help him with the dreaded kill and drill!