How to Marxist / Communist professors mark assignments?

Do they actually give their students marks based on their individual assignments, or do they merely aggregate the class marks and give them an "average" in the spirit of "equality"?

Quote of the day

It is easy to turn an aquarium into fish soup, but much more difficult to turn fish soup back into an aquarium.”

–Lech Walesa, speaking of how to restructure an economy after decades of Communist mismanagement