Never let school get in the way of your education.
Caveat: I’ve said this brashly to several deans, when it seemed appropriately inappropriate, and while a few are now good friends, the others acted troubled and now seem to avoid me. That is, YMMV. Some lifer academics may not understand when you disregard the only rubrics they know.
If you mean grades, I’d encourage you to disentangle your own retrospective self-evaluation. The point is learning, which is ultimately a personal journey. Grades are just an institutional proxy for learning outcomes, and when some students can afford private tutors when others have to work third shift to remain enrolled, the currency isn’t fungible. That is, grades are buttons and bottle caps. Learning, curiosity, discovery, and knowledge, for its own sake, is the only true currency in education.