He's 16, and even though he may have some challenges due to his learning problems, you want him to be able to navigate the wider world of employment and living, correct? The workplace will demand that he know where he needs to be at certain times and what he needs to be doing. You can't go along every day when he goes off to work. Seems to me like this is a perfect time to start transitioning to a more independent schedule and taking responsibility for things like where your locker and your classes are.
He sounds like a great kid--I'm sure he will adjust.