Here's why it's not classified as historical fiction:
* The book focuses on the protagonist's personal journey and experiences. It's more about how a young girl navigates a difficult situation and adapts to a new environment.
* The events are not presented as past events. While the story takes place during the Vietnam War, it's not told as a historical account.
* The book has a contemporary feel. The language, characters, and themes resonate with modern readers, even though the story is set in the past.
Therefore, "Inside Out and Back Again" is more accurately classified as contemporary fiction with elements of coming-of-age and cultural exploration.