Thanks polarbear, you've affirmed my thoughts that perhaps it time for some testing. Who diagnoses dysgraphia? Would an OT do that? Or a neuropsych? FWIW, I don't think the careless mistakes sound like what you describe with your son. I think he is getting bored and isn't reading the questions closely enough. Which concerns me because math was always the one subject he did not find dull at school (at least now that he's been accelerated). I do have concerns about his writing though which his OT also found troubling but when she tested him he was in the normal range. This was last year in 2nd grade and when I brought it up to the teacher she did not feel he had a problem with writing. However, the rocket math exercises are a big challenge for him and he will actively resist writing a lot, will short hand, not put in enough detail, and I wonder how much of this might be due to discomfort with the physical act of writing rather than being able to put words together in his head.