My 2nd grade, 8 year old dd is working through R & S grade 2 spelling. We've attempted AAS (which I love but cannot implement with all our other time-intensive curricula) and a few others (Spelling Workout, Sequential Spelling & Spelling Wisdom with my older dd), but so far I've been most pleased with R & S on terms of how thorough it is. However, this 2nd grade book is extremely easy for dd. I turned to the back and had her orally spell done of the last words, and she didn't miss a single one. I'm considering getting the grade 3 book and skipping the rest if the grade 2 book. My question is this: will she be missing anything vital in terms of understanding or rules if I do this? My 4th grade dd is doing the 4th grade book, and it's quite a bit more challenging for her, which may or may not be a function of their natural spelling ability--I'm not sure yet.