Warning super-long post ahead!
Right now he is in a morning class with 4 other hh kids, and they use ASL in class (his teacher is hearing, but did her masters at Gallaudet). He doesn't sign there either! Just about the only signs he will use are "please" and "sorry." But I am constantly amazed at his receptive ASL vocabulary.
I'm taking another ASL course at the end of July. I sign with him in the morning before he puts his aids in, I'm hoping when I know more sign he'll be more into that.
Yep, different system... the school has not assessed anything, his hearing was identified when he was a newborn (well before school started!!) I have a recommendation for an OT that I was thinking about consulting about some sensory issues, going to try to get an assessment this summer. Also there is a school here that helps with various neuro issues (including a Saturday morning course for dysgraphia), I'm going to attend their info session next week to see whether or not that would be appropriate/helpful.
This is the first paper I found that mentioned it:
http://www.visualspatial.org/files/poorhand.pdf I'm not entirely convinced that they know what they are talking about, but considering my son gets no high-frequency input it really jumped out at me. There's also a book called "Disconnected Kids" that I'm waiting to get from the library.
Everything is changing so quickly, I sometimes wonder if we know what we're doing with our kids... in the "old days" hh people didn't really get hearing technology until school age for the most part I think, now they get aided at 4 months and everyone says "Great!" but I wonder if because he expends so much mental energy on oral/aural expression of language - and has done since infancy - if that's taken energy away from developing his manual expression of language (both written and sign).