Any truth in this frustrated teachers rant? Are these two words from the same root?
If so, then it has to be the most beautiful pairing of words ever. 
Ummmm. No.
Proctor is a shortened form of the word procurator, a term often used to mean a Roman provincial governor. It, in turn, is a compound of pro (for) and curare (to care, attend). A procurator is, therefore, someone appointed to manage the affairs of another.
**Proctologist **is a straightforward Greek loan. Proktos (πρωκτός) refers to the anus, and, well, -ologist is, I think, obvious enough.
Thanks Kizarvexius.
This is one time the teacher was wrong. Still, it would have been a funny coincidence, if it were.
I try to make a joke along those lines every time I proctor a test, and it never really works.
My paternal grandmothers maiden name was Proctor.
No, the title to that blog post was in fact the same lame joke later referenced by Chronos. I don’t teach English for a reason, but this much I know.
If an exam proctor places anything in your anus, you should remind them of the differences in the root words as indicated above.
eta: zombie probings are not cool people
Besides the words being from different roots, in different languages even, the quote itself is not accurate. For some conditions, proctologists can get significant diagnostic information from “the shit they see”.
All I know is some asshole has my pen. But seriously, it’s a difference in status; Proctologists get their own orifice.