Anomaly

Part of speech: adj

The source sentence and page number: Funny in Farsi not seem such a big deal in other families, but my parents, both of whom are painfully shy, looked upon their outgoing anomaly, just as Native Americans regard an albino buffalo-he was a miracle."

Context Clues: I use logic because they refer that the albino buffalo-he was a miracle, it meant something weird, peculiar to them

Definition: something different, peculiar, not easily classified.

Your original sentence: The girl was anomaly different then all the rest of the people in the classroom.