My idea is to protect the parents information from the eyes of Teachers. It will be a great addition when parents Email IDs masked in the list of students. It will be very helpful especially when there is no difference between Admin & a Teacher Role.
In our use case we may add a student volunteer to do the corrections as TA(Teachers assistant) but we dont want to expose the Email ID of parents.
I am happy to provide more details to explain about our use case.