I can't speak exactly what you can do, only what I did with my dd when she was in 7th grade. She is 17 now and it worked for us.
Before school started we told her that we would ground her from the bus, I would drive and pick her daily from school, go in to her school on pickup and go through her locker, saunter through the school to look at blackboards, (sometimes her teachers were there and I would say HI), and we went over her homework (due dates) BEFORE we left the school.
Once we got home, I would go over every shred of paper AGAIN, look at her homework, go over with a fine tooth comb.
I would get her a snack and she would begin.
If she did not have anything due I would pick out work for her to do from her book.
This was to go on until the next grading period. In addition she was grounded from everything.
Now she was informed PRIOR to school STARTING that this would be the punishment for not turning in her work.
So...what brought this on you ask? She did not turn in a HUGE science project.
This was the worst punishment I ever gave because it was sheer torture on us.
However she learned how to calculate her grade percentage (keep tabs), study, organize, and plan.
As the quarter came to an end she was begging us forgiveness. And promised that she would NEVER do this again.
Well she is a Senior now and she never did it again.

But she learned ALOT esp. how a ZERO drops your grade.
Now of course this may not work for you but it can give you something to think about.
Hang in there!