I haven't been able to post on MN for a few days, and just wanted to say thank you for all the useful responses, and for the linked guidelines.
In relation to posters still talking about me having biases etc, please could you read my opening post again, as these comments have taken the thread off topic.
Just to address these things notwithstanding, my opening post explains that the concern was that only one thing was talked about by the teacher, ie the Harris campaign narrative. If the teacher also talked about the Trump campaign narrative, and also about the other candidates' campaign narratives, and had also talked about why voters might have voted for Trump, and compared stated policies from both sides, and relevant things were put in historical or political context, etc etc, it would not have been a problem.
American MNers have said that in the last few years food prices have basically doubled, fuel prices have gone up, illegal immigration (note the use of the word "illegal" as distinct from any immigration) has caused huge problems and there are miles and miles of streets full of tents of homeless people in major cities, etc, and that this is why they think so many people voted Trump - i would have expected this to be talked about. I would also expect foreign policies of all candidates to be talked about, especially as many voters are afraid of ww3 and the US stance is pivotal in the world in this respect.
If you watch interviews with normal people on youtube you can see many people saying they would vote Trump because he "gets things done". So there is more than one way of seeing Trump - the narrative given is just one way.
I do not think that it is appropriate to talk about affairs with porn stars with a group of 13 year olds, it is not age appropriate. A poster has pointed this out and I completely agree.
In relation to the things listed on this thread by some posters as "facts" are not facts - I am not saying this as a supporter of one side or the other, I am commenting on what constitutes facts. The only issue mentioned on this thread (but not by the teacher) which could correctly be called a "fact" is that there is a conviction for a felony. To what extent people think that Trump has been racist or dishonest untruthful will come down to their belief systems and/or the extent to which things were taken out of context or misrepresented, there is no "factual" or "convicted" dishonesty or racism or affairs. Even the likes of Kristoff - very firmly of the Democrat camp - has pointed this out.
I think it would be fine for the teacher to give opinions, as long as they weren't age inappropriate or extreme, and as long as the teacher explained that it was opinion not fact.