You could. I am most familiar with people asking for a re-grade when their total IBD score falls short of achieving the IBD or the score required for their college admission, etc. Iow, when something big is at stake. You might want to ask your IB coordinator this question. It sounds like it doesn’t really matter except as a matter of pride. But if you’re looking at college outside the US, that may not be true! The most awarded score for Psych SL was 4.