Being a student in 10th grade [American school system], last year (9th) I took a required course called World History (advanced class, so we covered everythinnnnnng in depth) but we spent a mere day discussing the old shadow that is Byzantium (not Rome). We were told that it was what remained after barbarians took over Rome, we were told about Justinian. We weren't told of his accomplishments, only that he was a ruler. We were told about his wife, but not about ANY of the other rulers. We were told about its demise - the seizure of Rum/Constantinople - by the "Islamic invaders" and it sounded exactly like the story of Vienna fighting back Islams, except that Constantinople fell. We weren't told about ERE at its greatest extent or anything. We covered the rulers, its capital, and where it came from (the REAL Rome, the teacher said).