We have grade access set so that faculty advisors can see their advisees grading history for all courses. Some faculty choose to display grades to students for some assignments and not for others. The possibility exists therefore that an advisor may be able to see a student's grade for a given assignment while his advisee may not. In that case, it's possible for the advisor, without knowing that the student doesn't know the grade, to spill the beans to the student to the chagrin of the teacher of the course.
It would be great if there were a way to display to the advisor the student visibility status for each assignment, e.g. on the "Grade Detail" display of an advisee's Progress Profile tab.