Many courses have lectures spread out over the week, and the students don't need to be in 9-4 or whatever you class as teaching hours. Degree courses can vary between 8 to 25 contact hours a week, with entire days left for reading, and studying outside of class. Many post graduate courses are just one full day a week, or several evenings instead - so it is entirely possible to have daytime availability and be a 'student'.
However, when i mentioned a very eminent Bristol law professor, whose book on a core area she would certainly have used, she had never heard of him (or by implication the book).
One of my "Regular but not often" girls told me during post-coital conversation on my first visit to her that she drives buses for Stagecoach elsewhere in Greater Manchester.
I bet she handled your manhood like she would have have handled her gearstick sorry RL, couldn't help it. You keep handing them them to me on a plate!!