why go to university?
I use a harder skilling mod because of the long lifespans I play, and my sims have plenty of drama and chaos in their busy lives that leveling up is actually very hard for them. Considering their 4 allowed play-days per year, and that they only skill when they want to (and for many of my sims, that is not very often at all!), many of my less studious sims never reach more than a level 2-3 in most skill areas.
The system I'm using was something I made up for my TS3 sims, but nothing really ever came of that project, so I'm using it again here with more luck. With the combination of harder skilling and my town career limitations, going to university is a real benefit for many of my sims.