In school, we (I'm in the US) spent a whole high school semester on Greece and Rome. In elementary school we had a unit on Mayans/Aztecs/the Inca, and we had a unit on ancient India, but not in high school. For some reason Chinese history was really ignored so I didn't get that until I chose to take a class in college. Since we don't have a national curriculum in the US, I'm sure it's different in different places. I think we know about the Mayans because Americans like to fly to Cancun.
This is a continuation of the 19th century American bias towards Greek classicism as the hallmark of democracy. Conflict with the Ottomans generated a lot of sympathy toward Greece and that was reflected in fads of fashion, architecture, place names, and education.
We studied all the big Eurasian civs...except for Persians. I never understood why the omission. Certainly not cause modern regime given the woke trappings adorning the rest of the curriculum.
It's an extra bummer quite simply because civilizations in the middle interact with more civilizations, and so are a great way to tie together everything else one remembers into a coherent whole.
(Umayyads conquer Sassanids and 100-200 years later have a big only-old-school-military-historicans-think-it-matters one-off battle with the Tang dynasty in like modern Tajikistan or something. What a great flashcard!)
