my guess is working memory might be really helpful when learning things like arithmetic and the math facts, but not as helpful when it comes to algebra or geometry where abstract reasoning would be more helpful. I also think when people talk about "working memory" they are talking about two different things. My daughter had a relatively good working memory score (98th percentile I think), but she is also very unfocused becaase of ADHD. She can repeat numbers backwards but can't stay on task to follow directions. So the WISC shows good working memory, but the BRIEF (for executive functioning) shows poor working memory. Which is more important for academic success? Probably the BRIEF type of working memory. If I could get her to remember to turn in homework, that would be better than having her repeat 7 digits backwards. I just wanted to point out the difference. I think if you could do a subject acceleration for reading/writing that would probably meet her needs. My son's school ability groups the kids for reading/spelling, but if that fails, you could ask if you can send in advanced books. I think it's easier for schools to differentiate language arts than math, so that's why you hear more about math acceleration.