Teachers in Germany are supposed to represent democratic values in all subjects they teach (a "Querschnittsaufgabe" or "cross-sectional task"). That doesn't mean holding a democratic vote about having an exam that week. It does mean to value every student, standing up for human and civil rights, for justice, and things like that. If they do it well, it won't be blatantly obvious, but it is no less real for that. And not representing democracy would mean representing not-democracy, so they cannot avoid taking a stand. The law, ultimately the constitution, sets out what that stand has to be for a civil servant.
It comes down to the nature of curriculum development. It is never possible to teach isolated facts without also reinforcing a culture. Those who claim that what they do is not political are deceiving themselves, or their audience.
Say you have a trigonometry class. Are the students just learning a branch of mathematics, or are they learning more than that? Well, if they would be deducted points on an exam for an answer to a word problem for grammar and spelling errors, then it isn't just mathematics. So it would be fair to say that any mathematics class also becomes education whatever language it is held in. And in other subjects. Presentation skills, for instance. In primary school, mathematics/arithmetic shades into motor skills, jointly with writing, and also, always, into social skills of learning in class. Listening, concentration, and all that.