>We did not study world maps, because international geography, as a subject, had been phased out of many state curriculums long before.
It's really just a generalized statement based on her personal experience.
Here's some anecdata:
In 11th grade I took a world cultures class that spent a lot of time in Russian and Chinese history as well as a broader overview of various parts of Africa (mostly sub-Saharan, if I recall correctly). This was a couple of years after doing a world cultures class that was a bit broader and shallower, but I do remember it having a pretty extensive introduction to the bigger world religions. We learned the Five Pillars of Islam as well as some of the basic principles of Hinduism and Buddhism.
In elementary school, the gifted kids would put on a thing called "International Day" where they'd each pick a country, write to embassies for info, get into the CIA World Factbook on the World Wide Web, wear clothing from the nation, bring in their food, etc. It was a nice way for kids to try tzatziki sauce, listen to Slovenian-style polka, say hello in Mandarin, or see someone wearing a ghoutra or kaftan.
While this was a good school district, it was nothing remotely resembling an urban or cosmopolitan one. I have to think that plenty of Americans had similar experiences like this.