invigilator
noun🔊/ɪnˈvɪdʒɪleɪtə(r)/
🔊/ɪnˈvɪdʒɪleɪtər/
(British English) (North American English proctor)
a person who watches people while they are taking an exam to make sure that they have everything they need, that they keep to the rules, etc. 监考人员