Another option for oral expression assessment accommodations is to give oral presentations to a small group or individual, with whom he has a high comfort level. This might be a guidance counselor, favorite teacher, coach/music director, two of his best friends. You would need to determine with him who should be on the short list of audience members, and how many people he feels comfortable having present. Or he might do his presentations alone or at home, into a camera, and turn in a video clip.
Also, it doesn't have to be all or nothing. You could suggest that he do a certain number of oral presentations per term, with all others modified to written or visual presentations. So if say his peers do four, then he does one. Or if they have to present for ten minutes, he can stop after two.
