Iggie's House by Judy Blume

 classic, coming of age novel from award-winning author Judy Blume about the bonds that form between children when a black family moves into an all white neighborhood.
 
Iggie’s House just wasn’t the same. Iggie was gone, moved to Tokyo. And there was Winnie, cracking her gum on Grove Street, where she’d always lived, with no more best friend and two weeks left of summer.
 
Then the Garber family moved into Iggie’s house—two boys, Glenn and Herbie, and Tina, their little sister. The Garbers were black and Grove Street was white and always had been. Winnie, a welcoming committee of one, set out to make a good impression and be a good neighbor. 
 
But Glenn and Herbie and Tina didn’t want a “good neighbor.” They wanted a friend. And when the other white families on the block got word of it, that's when the trouble started.