@Danitsia_TLP It seems like you have two points:
- You would like to have a pop-up notice that gives you a warning that class time is coming and asks if you would like to go with the sim. 
 I think that would be a reasonable request - one like we get when they are going to graduation and like we get for certain careers (like the Scientist). Even though the class is a rabbit hole, the wait outside the classroom and the ability to get there a few minutes early and have a snack or study outside the building like dormitory students have would be nice for off-campus (commuting) students.
- You refer to time going way too fast to catch when your sim is leaving for class.
 I'm wondering if you're talking about the speed bug? Can you please check if this bug is an issue in your game? This happed to me this weekend, and it's a known bug. The workaround is to fire the maid on the phone. If the maid is in the middle of the shift the speed will stay fast until they go home, but once they're fired and don't come to the lot the issue is gone:
 Bug report about speed: https://answers.ea.com/t5/Bug-Reports/WORKAROUND-Game-randomly-speeds-up/td-p/8533657
SheriGR ☕ – I don’t work for EA