I agree, JessM. I think that Pimlico Primary is one of the few Academies in the primary sector and can therefore appoint whoever they want without needing to go through any Department.
Unfortunately in many primaries, the head has to teach as well as do admin. It would be interesting to know who was supposed to be her mentor.
It happens in secondary schools that there are non-teaching heads without qualifications. You never hear what happens to them. I wonder if the information would be available through a freedom of information request.
When I was teaching, I used to have people coming in to my classrooms, just like Hunt did. I would think that any school would want a historian to come in and teach the kids, to give them some idea that you do not just learn from teachers. In history in particular there were often grandparents coming in to talk about the war, etc. He probably made a mistake in using the word teaching, but that's what he was doing. I was often asked if I regretted giving up teaching, and I always said I still was, just about different things, like food and nutrition and vegetarianism instead of English and maths.