Thanks JoAnnQN for your response.
Since my dd goes to a gifted school, most of their curriculum is already accelerated. The school groups by ability at the beginning of the school year (right after summer) and her performance last September put her in her current math level. I'm hoping that the school will strongly consider her RIT scores for placement next year.
I think my dd would prefer to learn math similarly to your son. When she used to enjoy math, I would try to find fun worksheets for her to do at home since she was getting bored with the stuff she learns from her math class. We would jump around, but still came back to older material. Perhaps I should try to re-motivate her with more new math topics.
