I always been a genius but didn't show it so I wasn't ostracized. Black geniuses are the loneliest people in the world. So I was a C student until my final year of high school which was when I stopped caring what other people thought and got all A's and 1 B.
College was easy for me, mainly because my field of study was what I was actually doing which is IT. What was hard was doing the actual work and staying up until 1 to 2 AM writing some bullshit for classes like Statistics, Literature, English, etc. I graduated in 2 years with a 3.6GPA which really doesn't matter once you are out in the real world. I could have had a 4.0 but instead of doing my projects, I went to Asia and partied it up. Good times. Plus what is the real difference between a 4.0 and a 3.6? I'm making more cheddar than the people who did better than me in school.
But grades are a reflection of how hard or how much work you accomplish and not how smart you actually are.