My class has 30 students, their marks are shown below
100,97,96,93,88,85,84,77,76,71,
66,62,62,55,53,49,48,46,46,43,
43,43,43,43,35,33,31,31,31,13

I would like to determine the most representative mark for this class for
comparing with another class.

I think the functions - average, mode are not a very representative in this
case.
Does anyone have any suggestions on how to define the most representative
mark for this class?

Thank you in advance
Eric