OP, I had an issue with my ds supposedly handing in papers yet the teacher not getting them. I decided to start saving everything he ever brought home that was graded. His teacher sent home a folder every Monday with the HW, tests and classwork she graded the prior week. I got a nice basket for hanging files that ds was supposed to put his work in every Monday when he got home and after I looked at it. That way if he claimed he handed it in, I could go back and look to see if it was graded. I would save all the papers until the marking period ended. It took him a few weeks to get used to the new routine, but it just became part of it and it worked out well. Good luck 
ETA I leave it in my livingroom because its decorative so its not like my ds has possession of it. Maybe if you did that it would be more like you saving it and not him, at least to him for the sake of the progress he is making.

ETA I leave it in my livingroom because its decorative so its not like my ds has possession of it. Maybe if you did that it would be more like you saving it and not him, at least to him for the sake of the progress he is making.

