I have always been interested in the idea of apprenticeships or third level universities existing in the Harry Potter universe, after secondary school. While some examples of specialized training, such as Auror training, have been mentioned in the past, there was no definitive example of a college or university.

I believe that I have found one. On page 36, of The Tales of Beedle the Bard, there is a footnote, that references the Wizarding Academy of Dramatic Arts (W.A.D.A), and a Herbology Professor who left Hogwarts to teach there.

I'm not sure if 'The Tales of Beedle the Bard' are considered canon, but as Hermione inherits a copy in DH, I would imagine that this has at least some weight behind it.

 

Interesting. Though I can't help but wonder what a Herbology expert is going to be teaching at a drama school.

 

There’s a lowbrow joke about art kids that I could make (was an art kid), but probably because they needed pigments and the like for performances. I find that grinding pigments and inks is more of a craft kind of thing than a chemistry kind of thing these days so instinct says the herbology professor might help there. I have no doubt there are dyers that use magic and plants to make fabric costumes.

There might be an entirely different understanding of dramatic arts in the wizarding world though.

 

While it's possible that Professor Viridian was a foreign professor, or a Hogwarts professor of the past, he could also be a professor at another institution of some flavor within Britain.

 

HBP Ch. 25

It always seemed unlikely to me that this would be continental (or international for that matter). Best proof I've got anyhow.
edit- Haven't given any thought to post-Hogwarts or N.E.W.T alternatives though.