To be honest, I could have disputed that grade. (They were computer multiple choice/true-false quizzes. I found and proved with the textbook that my answers were correct despite what the automatic grader showed, so the instructor gave back my points.) I disputed some of my other grades and got 100's. It just got too annoying to dispute each one (I felt like a whiner), so I didn't bother on the last one. Besides, perfection is boring, eh? 
