I know I was having trouble in school as my Graves progressed. I was in honours/AP classes and had more trouble than I ever did. I had trouble concentrating. Also, my Trig/Pre-cal classes all of the sudden became hard for me. I gave up on Calculus, because I did not have the concentration, etc. for it. Now that I have decided to return to college, I am scared it will be harder for me, since I had so much trouble the last part of HS.