Al is really starting to get the hang of the more direct and concise style of writing. He understands the basic rules of grammar we've covered, the trick now is getting him to recognize his mistakes. I realized there might be a breakdown in his proofreading, so today we focused on the that. It turns out that he does have an issue. He's so focused on the "facts" of what he's writing, that he passes over the minutia. He actually read multiple grammatically incorrect sentences as correct. This is really a matter of practice and focusing on the details.