Currently, "Score Details" displays the Mean, High, and Low grades for comparison to my student's grade. The median grade is a more meaningful comparison than mean. The mean grade can be strongly biased low, for example, if one student fails to turn in the assignment and gets a zero grade. In that example, most students will score above the mean. If my simply turns in her assignment, she scores above the mean, but I still don't know how that compares to the other students in the class.
However, by definition, half the students will score above the median, and half will score below, even in the above example. Then my student's grade compared to the median always indicates if she did better or worse than half the class. Therefore, I recommend reporting median rather mean grades for comparison.