The Color of Friendship, Disney Channel
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I think this is set in like the 70's or something. This white South African girl named Mahree goes to stay with the family of an African American congressman in Washington, D.C. She didn't expect them to be black and they didn't expect her to be white, but eventually Mahree and the congressman's daughter, Piper (both of whom we like, btw), become friends, and learn to change their attitudes about each other and stuff. I dunno quite what to say, it's a pretty decent movie, it's got some powerful scenes and stuff. Can't think what else to tell you.