I feel the issue you are addressing is very important, and easily overlooked, or worse, not taken seriously.

I would like to add to your list of reasons for teacher burn out and the development of mental health issues among teachers. I feel that teacher education is lacking. The preparation teachers recieve in their achooling is severely lacking in many ways. One way in particular is educating preparing teachers how to deal with the stress of the job. Knowing how to breath underwater if you will. You meed to learn when to focus on work and the atudents and when to focus on yourself.

I truly hope that all the global education system shifts to support their teachers more.