Not sure.
Where I grew up, my school was actually located on old native American campgrounds, so we learned about the native Americans who lived in that area. We learned about their history, culture, and even some of their religious beliefs.
The Hopi are not local to that region. Perhaps it was part of a larger unit?
I know when we were learning about Europe, we did a lot of different projects, one on each country. People would bring in food, traditional dress, etc. It was fascinating.
Can’t do that now in public schools; too many regulations.
I’d agree on differing cultures. I don’t know where the cut off is.
I was in a private Catholic School and we learned about the Missions in California and God but it was a religious school. When I went to public school I don’t remember any religion.
HS anthropology did go into belief systems and one teacher even brought in a mummy head from Egypt.