Where you come from is irrelevant.
They do teach it in highschools, and aside from that, many high schools let you take college credits (learning actual college courses)
why do you repeatedly mistype the word "which" as "wich"?
It would indeed be utterly and totally ridiculous which is why I called you out on it. (I did mistype, I meant to say "one per class", teachers usually teach multiple different classes. eg "algebra, geometry, calculus"), specifically I was referring to this
Right there, that is BS.
It doesn't matter if she is a highschool teacher, she would need to have a degree in the field to teach highschool, and would have textbooks on the field far more advanced that what is being taught in her classes.
A student on the other hand will only get the one textbook which is assigned to the class. And unless we were an advanced placement student (in the USA, which is where the MC is from), we would have only taken "math for highschool students" and "geometry for highschool students", even though highschools do offer things like calculus.
So, from geometry class we would probably get a geometry textbook. but if she is teaching math in highschool, she will have all the books for all her classes and then on top of that she will also have a variety of more advanced books in her field which will never be seen by any of her students (unless the went on to get a degree in mathematics as well)
Irrelevant, wide they might be, but they aren't useful for us
https://en.wikipedia.org/wiki/Anthropology#Fields
Also, being too wide is actually bad for us. we need something specific to actually get something out of it