One of my favorite books of all time is one I have extolled on this blog before, and that is A Patriot's History of the United States. One of the book's authors - Professor Larry Schweikart - is an authority mentioned in a recent article about the left-wing bias that is often found in the history textbooks of our nation's schools.
Schweikart has a very simple way of quickly evaluating any of these textbooks and seeing which way they lean politically. He calls it "the Reagan Test."
If the textbook asserts (falsely) how Reagan's tax cuts ruined the American economy and how Gorbachev ended the Cold War with his brilliance while the war-mongering Reagan provoked the Soviets with his defense buildup, then you can bet that the rest of the book gets a lot of other subjects wrong as well by giving a left-wing view of world and U.S. history.
So what do you do if the textbook doesn't get as far as the Reagan presidency, such as the ones I use? I have found that reading the sections of the book that discuss Muslim conquest can be quite enlightening. I possess a 7th grade medieval world history book - *cough* TCI's History Alive *cough* - that makes the Muslim invasion of Europe in the 700s A.D. appear as though it was the Europeans who were the aggressors.
Good Day to You, Sir