There are NO recorded Asian undergraduates disabled by ADD, and only 0.7 percent of Asian students have a learning disability, according to government data. Read the excellent Pope Center study on student disabilities here.
I’ve been teaching since 2002 (with a two year hiatus). I have taught in aggregate probably around 2,500 students. I’ve probably been asked to accommodate 100+ students. Not a single one was an Asian. In fact, I don’t recall a single student coming from an under-represented group on campus either. Beyond a shadow of a doubt, most of the students I am asked to accommodate come from upper-class white families.
That really does not surprise me a bit. I suspect that there’s a parallel story in here somewhere about the recent spike in people diagnosed w/ autism, nut allergies, and gluten allergies.