Sim failed class at uni because she couldn't get to it in time
My Sim is at Foxbury and two of the classes she was taking, when one class ended the next one started five minutes later. They were both in different buildings, and it would take her 40 minutes to walk across the campus to get from one building to the next, which either meant she missed her class entirely or would make the last half hour. She failed the class and got an F, even though she always did the homework and did extra study. The buildings aren't even that far apart. In the real world, theres no way it would take you 40mins to walk that distance, it would take five mins at the most. The timings in this game sometimes are so annoying.
I also noticed that sometimes on her way to class she would get distracted, stop at the bottom of stairs and start talking to someone and this would make her late.