Inge Lohmark, is a biology teacher in Western Pommerania, one of the parts of Germany, where no one lives anymore, since the Fall of the Wall. She is as a teacher, in a school that will be closed because of the lack of students, with a lot of traits totally cool for people who admire Fräulein Rottenmeyer from 'Heidi'.
She is old fashioned in her teaching styles, can't stand kids in adolescence and is passionate only about her subject.
... and everything she says about her fellow teachers and her students so far is hilarious and true. I'm not a teacher but I was a student once, and now I'm right back there, but it might have been my math teacher who was like her.