Not to pick on you Soc, but the literacy problem is due to deaf people approaching English as a second language...Research has indicated that Deaf people make the same sort of English errors as do native speakers of say Spanish or whatever. Haven't you ever read some of those odd English sites, where you can read "English" constructions written by speakers of other languages? Those sites make ASLers look like they have a command of English that would befit a Harvard professor!
On the other hand, Begans Assimulate You looks almost like....remember that computer phrase that looked like broken English that was popular a few years ago?
Yes...it's parental involvement that's key, not methodology. I know someone who was raised ASL only, went to res school (ASD) and went to Gally and finally got a Master's from a hearing (state) college!