Answer:
At the outset of the story, Rainsford is confident about which "class" he belongs to. As he says to his friend Whitney, "Luckily, you and I are hunters." But soon Rainsford will in fact become a "huntee." Although Rainsford uses the word class, which is usually associated with human social classes, he seems to mean that the two classes are the humans and the animals. "The Most Dangerous Game" is partly the story of how Rainsford fights to be treated as a human being by General Zaroff.