Teachers - the Typical Teacher Image

Here I am looking at a few photos of teachers and how they are photographed. I am interested to see if there is a common link between the photos of teachers I have found and to see if there is a certain 'teacher pose' within their portraits/photographs. 

From the photos I have seen, I think there is a common theme within the 5 photos below. There seems to be a common theme of standing in the school they work in while being photographed, or in front of a white/black board. Every single photo below is of a teacher standing in the school, either in the corridor or in the classroom.

Another similarity in these 5 photos is the dress code. All of the teachers are wearing smart clothing, in other words, their uniform. The two similarities I have mentioned already make the viewer know that they are a teacher. Rather than having a photo of just them, they are photographing their occupation and will be known for being a teacher. I feel these 5 photos are quite modern but very stereotypical photos of teachers, and whoever looks at these photos won't mistake them for anything else, other than a teacher.