This will have altered across the century especially with the arrival of the redbrick universities after the 1870s.
Prior to the opening of more uni's this was such a rare and privileged arena that they could make it up as they went along. These were the sons of rich men networking and living it large, and you were more bound by family expectations that you would become an MP or join the army - or become a bishop - than by any board of standards.
It would also vary across subject disciplines.
I suppose it was only when they let in proles who didn't understand the unwritten rules that it all had to get regulated and written down.



