Remember tongue map? : https://en.wikipedia.org/wiki/Tongue_map , I had this at school told in authoritative manner even though it is complete bullshit. A lot of history lessons are just state propaganda, for example, Martin Luther King was much more radical than it is usually said at school. One can give a lot of these type of examples.
I was curious - apparently they still taught the tongue map and the food pyramid in 2014. I haven't been able to find more recent textbooks, but I suspect they still might teach at least the tongue map here, because I found some online teaching material about that.
I have bachelors degree in math. Basic algebra is useful, however it is thought very badly. There is a lot of rote memorization, which is not useful for university level math. Precalculus is trash, mindless computations and solving a lot of quadratic equations. That's a big problem with school math, thought well it could be compressed to maybe 4 years instead of 12. I would say basic physics is better. Evolution in my school was maybe one lesson, this could be an 1 hour video. I had geography lessons in primary school where you had to memorize types of soil and where are they on the map of Poland. Polish literature is pro aristocracy nationalist propaganda mostly, Poland has a lot of messianic themes there which are complete bullshit. Overall for me school was a complete waste of time and source of stress, without it I would know more things that interest me and would be in much better health. In Poland we have schools in so called prussian education system - it was created to create factory workers, not thinking people. In Poland even Nobel prize winners are omitted at schools, it is only said that only Prize winners from Poland were Poles, even though most of our Nobel prize winners are Jews. We even have a lot of catholic propaganda with catholicism lessons financed from state budget.