Sims leave school for no reason.
So my household has 4 Sims: 2 adults, 1 teen, and 1 child. I entered "Edit Town" during school hours, then when I returned to the game, I found them outside the school, doing their homework, which they'd already done the day before, along with two game-generated Sims doing the same. I tried to get them to return to the school, but I noticed the game considered them to have not completed their homework, meaning I'd have to have them complete it all over again using the "Work on Late Homework" option. This is annoying as I usually use my Sims' time at school to meet/talk to friends. Additionally, this is my teen sim's last day at school, and he needs at least a B for me to choose his next trait, which might not happen if he has to complete his homework all over again. I tried going to the main menu without saving, but I had saved just after leaving "Edit Town", so after exiting without saving, my sims were still outside the school and still had uncompleted homework. How can I solve this?