Exchange: Anecdotes of an American Host Family & Their Foreign Exchange Student depicts the journey the Overly family experienced when they hosted a Brazilian exchange student for eleven months. Initially, they had basic ideas of what they could offer. They never anticipated the ways in which they would grow, navigating between the simple joys and nuanced challenges of welcoming a stranger into their home. Exchange highlights what ultimately unites people: compassion, commitment, understanding and a sense of humor.