I doubt that school and university would be in the same pack but who knows. I agree that it would be good to be able to choose wether you want to follow the children/teenagers at school. I don't have GTW yet so I am not sure about this, but what happens when you have multiple Sims in a family with different GTW careers - can you switch between them while they are both at work at the same time? Because that might get complicated when you have for example a child in elementary school, a teen in high school, a police officer dad and a doctor mum... can you only choose to follow one per day then or switch any time?
Enough with the complicated stuff, here are some of my ideas for a School pack:
- a time table that you can look at
- new activities and gameplay objects at school to improve existing skills and also new ones added with the pack
- for classes there could be Art, Music, PE, Science and Language and Culture (maybe to learn the culture skills, but it shouldn't be possible to max those skills unless you visit the places)
- a school bus (it would be cool if those were patched in with car pools and service cars like in the Sims 2 base game, "proper" cars could come in a later pack)
- school clubs and after school activities
- a school cafeteria
Also I could see how the calender from Seasons would fit well with a School pack:
- a new school year always starts at the first day of autumn
- there are school trips in spring
- summer holidays last from mid to end of summer
- each new school year the time table changes to spice things up (could be more or less randomized, I think)
I think the calender would add to the sense of a "whole school year" which would be nice - the problem is that seasons would be required for this and I can see how some people might not want that.