A two-fold question:
1. Is there a quality note taking device on the market for use in a classroom setting?
2. What is your take on note taking (note taker) and /or note taking technology (if even developed) for a freshman boy going into highschool with a moderate to moderately severe hearing loss. He wears hearing aids and currently has an FM and classroom amplification in his middle school classrooms.
With regard to the first part of your question, Microsoft Onenote may be used with a tablet PC, networked or not networked with a second computer so that the deaf student may view the notes as they are taken during class (assuming there are the two networked computers.) C-Print research conducted at NTID (http://www.ntid.rit.edu/cprint/) has a notetaking prototype that is part of the C-Print Pro tablet version that the local BOCES and Rochester City Schools prefer to OneNote, but it is not yet on the market.
On the second part of your question, I would strongly urge you to request a notetaker for your son. And that should be a qualified, paid notetaker, not another student taking notes for him. If the school system resists, this is worth fighting for!