I can tell you being from Louisiana that its what we're taught in school. Namely, it was over the unhappiness with the 3/5s Compromise(which I will admit in my more ignorant years I used as joking evidence that "the South actually wanted to consider slaves people") and the South's distance and difference in lifestyle. Its painted quite well actually. Obviously our teachers arent up there yelling that "The South will rise again!" but its taught as almost damage control. No one wants to admit any fault of their ancestors. My great grandfather was Mayor of Baton Rouge in the 1910s, his family before him were plantation owners. Short and sweet, my family line perpetuated slavery and subsequent segregation and oppression. Many people here are in the same boat. And, in the minds of most here, you dont insult someone's ancestors by saying what they stood for was wrong. You say they stood for something else. Pride is too ingrained into our culture to admit to the ugly truth.

I wish I still had my old textbooks to be able to post a shot of the paragraphs on the Civil War. But, if I recall correctly, they were from Georgia.