1) Sign language is a horrible medium for English communication in general, and especially for technical classes. Don't have the time to look up the URL now but there is a page on Galladuet's website says that the average reading level of deaf adults are around 4th grade (and knowing many other deaf people I believe it).
Sign language is beautiful but a bane to a quality education and to the "real world"--by the time I translate the ASL translation back into English, it winds up making not much sense at all, especially if the interpreter doesn't have the faintest idea what computer terms mean and confuse words like "distributed objects" and "distribution" in general.
2) I used a very narrow, specific service to get around sign language in high school and in college--instead of ASL, someone transcribed the conversation using C-Print. This way, I was able to take my own notes and such, and made top grades this way. However, this is a very rare service and not covered under law AFAIK.
Hope this clears things up. Thank you--I am going to go down to the disability service for graduates office right now and talk to them about this.