Yes I play with aging off, so my sims are basically permanent high school dropouts. It’s so frustrating.
That doesn't have to be though I don't think. Just make sure all of their skills and emotional stuff and any milestones you want are done and you can graduate them early or, I was told or I read, that if you age them up with a cake then they will graduate. I don't think I early graduated my sim's brother but it's been so long that I don't remember. Just save and then do the cake and see if it works and if it doesn't, early graduation isn't as bad as dropping out.
