There is apparently quite a bit of history that even those with a somewhat more rounded "education" were not taught. I saw the following book mentioned in a similar discussion just recently, and have now taken the time to order a copy of it from Amazon just now. Check out the reviews there for more info and discussion:
Lies My Teacher Told Me: Everything Your American History Textbook Got Wrong
from the reviews -->
"This is a real eye-opener to anyone who thinks they learned about U.S. history in high school. Loewen spent eleven years reviewing the 12 most commonly-used U.S. history textbooks and found all to be seriously wanting. Textbook publishers want to avoid controversy (so, apparently, do many school systems), so they feed students a white-washed, non-controversial, over-simplified version of this country's history and its most important historical figures.
To make his point, Loewen emphasizes the "dark side" of U.S. history, because that's the part that's missing from our education system. So, for example, we never learned that Woodrow Wilson ran one of the most racist administrations in history and helped to set back progress in race relations that had begun after the Civil War. Helen Keller's socialist leanings and political views are omitted and we only learn that she overcame blindness and deafness. John Brown is portrayed as a wild-eyed nut who ran amok until he was caught and hung, rather than an eloquent and dedicated abolitionist who uttered many of the same words and thoughts that Lincoln later expressed.
Loewen's book vividly illustrates the maxim that "those who do not learn from history are doomed to repeat it." Ignorance of our real history also renders us incapable of fully understanding the present and coming to grips with the issues of our time. For example, from the Civil War until around 1890, real racial progress was underway in the United States and civil rights laws were Federally enforced in the South. The military was integrated and former slaves had the right to vote, serve on juries and as witnesses in trials, own property and operate businesses. They also received mandatory public education, which was automatically extended to white children for the first time in the south. But, between 1890 and 1920, the Feds gradually disengaged and allowed southern racist governments to strip these rights from blacks and relegate them to virtual non-citizenship. Only within the last half-century has that policy been gradually reversed, again through Federal intervention. This history casts current racial attitudes and issues in a different light than most of our high school graduates are likely to see unless they are taught the complete history of their country, warts and all."
Here we could end up in jail if our kids don't go to school: 
