Without tenure, for have a factual enriching conversation with her students she would have been fired. She's going to retire soon, and is worried about teaching because "her generation" only went into it because they didn't fight to get what at the time were men's jobs. Today a 4.0 college grad with a biology degree would never teach 2nd grade.
Please look up the definition of homogeneous - being defined politically has nothing to do with it. All calc 1 classes are the same, and some politician demanding that pi=3 doesn't change this.
Additionally, the modern teacher has to deal with and put up with rather a lot of things that aren't directly related to their subject areas, but are politically determined.
FYI, denotatively, homogenous and homegeneous have different meanings. Connotatively, they are somewhat interchangeable. I suggest you look up the meaning of "thesaurus" and "pedantic". Or skip that and ask yourself, did you understand what I meant?
I do agree with you that people who dislike politics should not work for the government (which is, by it's very nature, political).
The syllabus is typically defined politically, which is anything but homegeneous. In fact, pretty much everything surrounding the teacher is defined by politics, which makes it a huge problem.
Until we're mature enough to get rid of the politics surrounding the teaching of even core subjects, like science, we're screwed.
And I don't blame the teachers one bit for walking away.