Is it in the works for students to be able to share a space with others so they can all edit it? I have a group of students who worked together to create a restaurant that used local produce, one kid decided to work on a cospace. Now they all want to pitch in. This would be an excellent possibility.
If you have a Pro license you can copy the student work in your space, then share it as an assignment to the students who want to work on it.