Sorry if this is a basic question. I’m trying to figure out what percentile I am in terms of the grades of my courses. I have the distribution of grades, i.e. how many students got what grade. But there are only 10 different grades that are possible, so I will have a situation where something like 25% of the class have the same grade as me. How is this typically defined? Am I only counting people who are worse than me, thereby skewing the result negatively the more people got the same grade? Is this a meaningful metric then?