I actually ran the game without an type of CC/Mods/Store content..
I loaded Appaloosa, created a sim, And was able to en roll her without an aptitude test, and she showed up at the campus, chose the Sorority house. Waited a bit, then a pop appeared about the welcome thing at Student union. she had her Schedule, was able to meet a few sims in the Jock social group..
Mind you this was a brand new Thesims3 folder created by the game itself..Not one of my back up files..
I will be testing again today with a family that has twin daughters that just aged up to young adult hood ready for University.