Not exactly what you're looking for, but would you be satisfied with evening classes?
This mod allows YA+ sims to attend classes. Although it does cost your sim money (but so does uni in most places) it does offer your sim a range of skill gaining classes to attend.
http://modthesims.info/download.php?t=480804
Alternatively, you could set up a lot as suggested above with skills related to science and have your sim work on/read skills related to it. For example, writing (you could even have her write non-fiction for lab reports), logic and science science (if you've got the relevant expansion pack).
Hope this helps!