How about....reduced number of problems on assignments (thinking math here but can apply to other things).
Modified assignments or alternate assignments....an example might be playing some sort of matching game with vocabulary flash cards with parent rather than writing definitions out.
In class work grade what he completes and count that...so if there are twenty questions and he gets five done grade him out of five. If you have questions about his ability to answer the other 15 have him complete them orally to a teacher assistant.
Parent allowed to scribe all homework or student able to type as appropriate.
Extended time and alternate testing answer recording methods. My husband as a teacher does this he has everyone take tests and quizzes written even if they have a 504 or IEP accommodation. Those who have accommodations who dont do well, he asks to come by at lunch or after school...then he chats with them about the stuff on the test, basically giving them an oral test. If they know their stuff he pulls out the test paper and documents...oral test administered and writes the new grade. Sometimes they don't even know they are getting an oral test. If they don't do well orally, he asks them to study again the topics and will retest orally in a few days.
