I worked for a professional tutoring and test center for a few years, and part of my job was to proctor all kinds of tests. I had to learn everything about each test, like the time limits on each section, passwords to unlock online tests and acceptable materials and aids. I proctored everything from college entrance exams to high tech certification tests for medical professionals. Some tests included high resolution x-ray and ultrasound images. Others were actually classified by the government.
I also had to process the tests and verify the results with my own embossing tool. Some of these tests were very expensive to take, and I also had to be very empathetic to testers who received failing scores. It was a very challenging job for me, and I say proctors definitely earn their money. Professional integrity is everything.