Automatically show the number of times a student has left my classroom to go to the RR each marking period#501

I’d love to be able to see how many times a student has left just my classroom to go to the restroom. I think that this would be most helpful if it were broken down by per marking period. The fates for this could be easily modified by the school administrator. I can imagine that this would appear as a small number below the students name, or something similar.