I have a somewhat different take. DS hated homework from the instant it was offered in K. He could do it, of course, but he hated the very idea of school intruding on his free time. (He has never been diagnosed with dysgraphia, but that may be in his mix; we remediated handwriting fluency heavily in the early grades. He also has AS, which makes him generally less flexible and less willing to do things he finds intrinsically worthless.)
IMO learning to comply and do it with reasonable quality was part of the bigger issue of learning to do things you don't want to in life. We hugely rewarded compliance and were as positive and encouraging as we could manage, so it wasn't all awful. We taught DS to make a "coping statement" like "I can probably knock this off in about 10 minutes" or "I'll do the easiest part first."
In school, in work, even in play, you will meet people who want you to do something a different way, and often you have to go along with someone else's way of doing things, or do a task you don't want to do. This becomes one of the most important skills in keeping a job, down the road. (I knew someone once who was fired because she didn't like the idea of brewing a pot of coffee.) DS is now in 4th and gives us no flak about homework; he gets it that it's part of his job, even if it's just review and not that interesting.
So DeHe, if it seems to you it's a motor issue or dysgraphia, by all means get him evaluated; but if you think it's purely that he doesn't want to comply, it may be worth working on.
DeeDee
