We did online algebra last year with him, and while he wasn't over the moon about it, he didn't fight tooth and nail when I asked him to do a few lessons. He REALLY appreciated how quickly he could move through the coursework, do a few problems and move onto another new concept. I appreciated how it sort of helped clarify for him that he is more than capable in that area, and way more capable than the school could see.
I'm glad to hear this. I tried doing this with our regular curriculum by skipping over the things that I knew were too repetitive. It helped a bit, but not a lot. I noticed that he liked doing Khan Academy when we played around with it, so I just started an online program with him. It's way too early to tell, but he immediately loved the idea that he could work on a concept, master it quickly, and move on. We'll see.
