As others have noted, human sacrifice was also present in the West in some cultures, quite often in matriarchical and land-based cultures. It was also done in the Middle East and as others have pointed out, early Judaism can be seen as stressing a move away from human sacrifice to animal and then, in Christianity to the paschal mystery in Jesus's self-sacrifice.
It's an interesting subject and I applaud comparative religious study at this level. It has to be carefully taught, though, as you point out.
You state that it would need to be taught carefully but I'm unsure of if it could ever be implemented.
Do we teach that Jesus was crucified as Christians believe (not even getting into resurection or whether He was the Son of God in the classroom) or teach the Muslim belief that he was not killed?
Do we point-by-point counter "Christians believe this about Jesus but Muslims believe that, while some Jews believe...."?
Do we break it down further to "Catholics believe... while Baptists believe... while Presbyterians believe... while Methodists believe..."?
Do we learn about each of the cultural origins of each discipline of Christianity? Do we tie all of this to changes in the role in Judeo-Christian faith in the land of America?