I was told by a writing specialist who my DS7 is working with that there isn't a nationally normed assessment for dsygraphia (to her knowledge) but it is more of a behavioral observation diagnosis. For about a year after learning about dysgraphia, I have suspected that my DS has dsygraphia. The neuropsych who did a full evaluation diagnosed him with DCD, but he did not feel that he could make a dsygraphia diagnosis based on his time with my son. It has been the writing specialist who sees my son twice a week "in action" who has told us she believes he shows the characteristics of dsygraphia.
polabear makes a very good point about doing a full evaluation rather than looking for a specific disorder as your DC's difficulties may be caused by a number of issues, not just dsygraphia (as is with my DS). Also, based on my experience, you may need someone who works more closely with your DC on a regular basis who can make this sort of diagnosis for you rather than a neuropsych.
One other piece of advice that I have learned just in the last couple of weeks about my DS through this writing specialist is that accommodating dsygraphia can be a tricky thing. She feels that he may have been given too many accommodations this past school year which has lead him to believe that he can't do the work at all without help and thus he resists doing any writing at all. He doesn't have belief in himself, which he freely tells me. She absolutely gets that it is a tough thing for him and something he struggles with. However I fully agree with her after seeing her work with him that he is capable of more than he was doing. We are working to find that line for him where it is just the right amount of help.
