When my ex was going for a second degree, she was doing some of her classes online. When it came time to take tests, she had to plug in a special camera they sent her. Apparently it was monitored or reviewed to make sure no one else was in the room with her.
Problem is, I could have installed VNC on her computer, taken remote control and been the one actually taking the tests and nobody would have been the wiser. So I'm not sure what it really accomplished.