Answer: I don't really have context, so this may be wrong. However, I would prefer having the Mean as the measure of central tendency to reflect my grade...
Step-by-step explanation: Why? The mean is the average. The Median is literally the middle number, and it can be affected by how low or high your grades are. If there is an outlier, it isn't affected much... However, the mean is affected greatly by an outlier, high or low and it better represents what you're scoring on assignments and tests...