I agree, that is crazy! Might I suggest that you focus less on the amount of time you spend in class and how many minutes and seconds you study, and focus on the QUALITY of your study skills.
FYI, if you said that to a medical school professor, they would laugh for about 10 minutes and then kick you right out of their office and you would be the laughing stock of faculty meetings for the whole year.
Clearly, you have much to learn, so swallow the grade, save your pride, and really take a look at how you are studying, not how much. Anyone can work hard, but not everyone works SMART.
Good luck