Re: Why use the word racist.
Not yet been perfected?
I wonder if the problem is actually at a lower level ie. I suspect ExamSoft are using a third-party facial recognition engine, as it seems the UK Home Office are experiencing similar problems:
UK passport photo checker shows bias against dark-skinned women
Aside: What I like about this specific article is that at the bottom they give clear details of the method used to create their test data set.