I'm not sure this really goes under gradebook although I suspect it will use some of the functionality from the gradebook so I have started by putting it here; however, for clarity I am referring to the user's profile, activity, grades tab (i.e., /course/user.php?id=1517&user=950&mode=grade).
Currently the grades tab under a user's activity report shows the scores that the student made on various assignments and quizzes; however, for this feature to really be helpful for a parent (and I am looking forward to replacing K12 Planet by implementing a parent role) they will want to know the student's final/current grade. With that in mind, it would also be helpful to summarize and calculate the categories and final grade in addition to giving the individual scores for particular activities. As an example, I would hope that after the current listing of grades that something like the following could be added.
Assignments (40%): 35.50%
Quizzes (50%): 45.00%
Participation (10%): 10.00%
Total Grade: 90.50 % (A)
Of course if not categories were used then it would just total the points and give a percentage. I think the tab on the actiivty page is a great idea and want to encourage its continued development/improvement/utility.
I would think much of this could be pulled by using code from the current gradebook display for the student.