Слово встречается в следующем контексте:
A separate Briefing Sheet is available on Law Campus for invigilated practice assessments.
Заранее спасибо

http://www.cotr.bc.ca/Docushare/dscgi/ds.py/Get/File-1836/Instructor-Distance_Exams.pdf - "Do you require an invigilated (supervised) exam or midterm? Some distance instructors do not require invigilated exams. Grades for these courses are calculated from work on assignments, essays..."

invigilated = экзамен, сдаваемый в присутствии преподавателя