by Steve Ambro v2.9.1.
I wonder if you are about to discover what I recently did.
I have two zombie students and placed each into a separate group. (Are you using groups?) Then in restrictions, from within the assignment, you can click the eye to the left of the restriction setting.
This way, the assignment will be visible only to those of that group.
The restriction settings in the assignment list will show you you and not the students.
If you are not familiar with groups then I can dig out my pathfinder which explains how to set them up.