been to school in 7 different US states, only history requirement I ever encountered was 2 years of it in high school, 1 world history class and one US history class, both only skimmed the surface

and the required classes do vary quite a bit from state to state I found out along the way, California set me back one year cause their curriculum sucked, both Napa and Vallejo were 1-2 years behind what I was offered on the east coast