To be honest, even the biased professors I encountered in college did an excellent job of presenting the facts, or if they didn't it was through omission rather than distortion. They were just very unaccepting of opinions that diverged from their own regarding those facts.
I also found history and science classes to present much more balanced opinions than English, sociology and psychology classes...
My experience might be unique, but I'd take that over the blatant lies I was taught in K-12...