Best Wishes elh0706,
I agree with Dottie, get specifics. The more they talk theory, the better it will sound, but they define most things differently than we do.
LoL - We've got the keyboarding for 5 sentences!
Does he need fewer problems on the page, or large print math problems? Mine did but didn't get it. If he can really handwrite 15 sentences, then he may be ok with handwritten math, IF the page is big enough, or he uses large square graph paper to keep it all straight, or is allowed to turn the notebook paper sideways to keep the lines of numbers aligned.....
Good luck!
Trinity