I had that sophomore year in high school. "World Religion" we hit the big 5: Islam, Christianity, Hinduism, Buhdaism, and Judaism ... didn't do any Confucius stuff. Pillars, wheels, mono vs poly, trinities, nirvana, Shiba, Vishnu ... very much just a nuts and bolts thing. Not so much on origin, but on doctrine for the living (pillars, wheels, commandments, castes) and a bit on the end game but then mostly staying away from the Abraham religions.
I wonder if one could do that in the US today or whether it was ever done in say, the south?