use proctored in a sentence.
I've proctored an exam for an online class.
I think the next step will be proctored exams, like edX just introduced.
Requires an $89 proctored exam, which is in line with the cost of other exam-based credit (dantes, clep, etc).
Where take home exams are used, a) they're usually harder than proctored exams, and b) they're usually open-book, so you're not expected to "write it just off the top of [your] head".