Who Shapes American History?

The College Board designs advance placement courses for high-school students, providing what critics call a monopoly on American History. But historians disagree about slavery, the rationale for various wars, the nature of government and what’s called "American Exceptionalism."  College Board standards set last year were called "unpatriotic" by conservatives, including the Republican National Committee, which accused the Board of a "radically revisionist view…the emphasizes negative aspects of our nation’s history while omitting or minimizing positive aspects." Now they have been revised--but the controversy is not going away.  Is "neutrality" even possible?