>>>http://www.bbc.co.uk/news/technology-30054140
>>
>>"invigilators"
>>
>>Not the first time recently I've seen that word and I understand what it means, but it's not used on this side of the pond.
>
>It's used in Canada.
>
>I can't think of any other term that would/could be used - what do you use down there?

http://english.stackexchange.com/questions/93260/a-better-word-for-invigilator-a-person-overseeing-an-exam

looks like proctor. That really leaps out at you. An invigilator is vigilant, god knows what a proctor is.