I installed a Mod (link shown above) that will let me go to Elementary School with kid sims or High School with teen sims. A message will pop up saying if I want to go with them or not when it's time to go.
It's similar to the careers you can go to with adult sims.
I haven't tried it yet but I am excited. I've been trying to add it to my game (removed an older version) and I have a new option on my sim so I guess it's working!
