In one classes, the professor drops the lowest test grade. We've taken 3 exams, and my average is a perfect 100. If I get less than a 94 on his final, it doesn't count and I still have 100 average... If I get over a 94 on the final, my test average will be over 100.
The final grade for his class breaks down to like 84% test grade, 14% attendance. With a 100 test average, and attending every class, I shall have a perfect 100.
I'm not very worried about my other 4 classes either.