Five years from now, you will not be thinking about that grade. ONE year from now, you will be thinking of your grades a lot, and your GPA will influence what colleges are options for you, and possibly how much money you will get. So you will end up with different options (I’m talking grades in general, not one grade in one class). You’ll pick an option, go there, and most likely thrive and succeed. I’d say by the time most kids start college, their HS GPA and resulting other choices and options are long gone from their minds. So HS grades are going to feel really important for the next year, and then after that, well not at all really.