Here's why:
* Series of Books: The "Little House" series is made up of several individual books, each focusing on a different stage in Laura Ingalls Wilder's life. The most famous, "Little House on the Prairie," is only the second book in the series.
* Popular Culture Impact: The series has had a significant impact on American culture, with the stories resonating with generations of readers.
* Historical Significance: The books provide a valuable glimpse into the lives of pioneer families in the American West during the 19th century.
* Literary Merit: Although the books are often considered children's literature, they also contain elements of historical fiction and realism.
Therefore, while the series as a whole is considered a classic, individual books within the series, including "Little House on the Prairie," are often categorized as classic children's literature.