In my experience, when I was student at deaf school, many students were HoH, possibly more than severe to profound deaf, also their ASL/PSE are very good and many of them embraced the deaf culture, even they are HoH and has great benefit with hearing aids.
Some HoH students helped me to order food at mall and I didnt have to write on note to order food, so I thanked to them, also they helped me to deal with some people when we went out of town.
Gallaudet is different story, it has more severe to profound deaf students than HoH students, also many received CI, it is very common than at local deaf school.