NAPA — North American Poolshooters Association I’ve been playing in the NAPA (North American Poolshooters Association) pool league, individual play, not team play, this last 15-week session. Overall I’m happy with this league, as I believe it has a more precise ranking system than the APA, and a better computer model, with difficult match-ups against players of varying skill levels. Here is the breakdown of the Ranking system: NAPA CLASSES: Grandmaster Class – Skill level