OK, so a lot of people have a recurring dream where you have to go back to high school because you missed a graduation requirement, even though you’re a grown-ass adult. But I’m curious if anyone knows what would actually happen in this scenario. Would they wave it off, or would you need to take a college class, or get your GED (or equivalent)? Any educators out there to enlighten us?


No high school would undo a diploma. Once issued, they have other things to work on and it isn’t a high priority.
Anyone in the workforce wouldn’t be affected if they did have their diploma rescinded as they already have work experience and nobody really cares about a high school diploma except as a formality.
So it wouldn’t happen and it would not matter if it did.
“We see you graduated top of your class and defended your thesis in [field] to acquire a ph.d. However, we see you are missing a credit from highschool so we will be revoking all your achievements.”