Since the Fall of 2014, I've taught calculus to students enrolled in 14 sections of Calculus I, II, or III. Each of those classes has followed a similar pattern with three exams during the term and a final exam. I compute grades after each exam to let everyone know exactly where they stand. The visualization below shows how those flow throughout the semester. If you hover over the B under Grade 1, for example, you'll find that students had earned a B after the first exam, that of those students went on to earn an A for their final grade, together with links illustrating how the grades flowed along the way.