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NCAA basketball referees are not exclusive to individual conferences. While many officials may work primarily in a specific conference, they are often able to officiate games across different conferences. This flexibility allows referees to gain experience and exposure to various styles of play.
However, each conference typically has its own pool of officials that it assigns to games, and these referees must meet the specific standards and requirements set by the conference. Additionally, during the NCAA tournament, officials from various conferences can be selected to work together, further emphasizing the non-exclusive nature of NCAA refereeing.