How to provide hidden feedback between markers on an assignment

[CCPECanvas]

Our Masters program requires a dissertation assignment to be marked by 2 markers and also reviewed by an external marker from our accrediting body.

Both markers assess the dissertation simultaneously, and then the secondary marker provides their written feedback to the primary marker (not to the student), who reviews the feedback and then finally returns the assignment to the student with a grade and also written feedback.

The external marker then requires visibility to everything: assignment, grade, written feedback to the student from the primary marker, AND the written feedback from the secondary marker to the primary. 

This final part is where I am challenged - the rest can be achieved via a regular assignment set-up. 

So my question: is there a way to set up an assignment such that the secondary marker can provide their feedback to the primary marker, which is hidden from the student, but visible to the external marker? 

[ProfessorBeyrer]

Thank you for providing the details of your dilemma, @CCPECanvas. Canvas is jealous of information that students have access to, so preserving the draft feedback of the secondary marker is easiest done outside of Canvas. I would create a Google Drive folder that is only accessible to all three markers. The students' dissertations could be downloaded from Canvas and then uploaded to Google Drive where the secondary marker could give feedback through some Google tool.

Another option is to set up a second Canvas course where the primary marker is the "student" and then submits each of the submitted dissertations to a different assignment for the secondary marker to provide feedback. The external marker could be given visibility to both classes to see both sets of feedback, and the students would not have access to the draft feedback from the secondary marker. (Uh, Greg, don't ask how many students there are -- that might be an ungainly number of assignments in the second Canvas course 🙄).

This is a good challenge. I hope that our colleagues here in the Community share their ideas too!

[CCPECanvas]

Thanks Greg. We have a very small no of Masters students so that makes this a little easier to manage.

I'd thought of the external drive solution ....... it's an option but I think I prefer to avoid involving other resources. 

So the idea of a second course could work. However, I'm wondering if I even need a second course. I think I maybe just need a second assignment which is only assigned to the 3 markers. Though I'm wondering what that might involve in terms of roles and sections. But at first glance that seems like something I might test