My old school mest up one of my grades when transfering 3 years ago is there anything I can do?

So 3 years ago during my freshman year of Highschool I transferred to a new school, now while I was transferring my PE teacher inputted some grades wrong, I went to ask him about it and he said he would fix it which he never actually did. Now my senior year this is coming back to haunt me, is there anyway I could get this fixed?A

Talk to your GC about contacting the other school.