You challenged the notion of "indoctrination and propaganda happening in US education" (from the parent comment). You simply made a counter-claim to the parent commenter, to the effect that you know none of your teachers ever presented opinion as truth.

Another commenter asks you whether, hypothetically, a certain kind of training were given to teachers would change your opinion.

Who is making a claim here?

Man, if you're trying to defend teachers, you're doing a sufficiently terrible job that I'd almost think you were deliberately strawmanning.

You've effectively responded to a hypothetical "if teachers were converted to propaganda machines, would that be propaganda" with evasion that makes you sound like you have something to hide.