Representation on the NEB is proportionate to membership. A chapter which represents 10 percent or more of the organization's membership is entitled to two representatives on the NEB. Chapters which represent at least 5 percent but no more than 10 percent of the organization's membership are entitled to one representative on the NEB. Each June 30 in a non-convention year, smaller chapters may seek recognition from the organization to determine whether they meet the 5 percent cut-off mark. Small chapters not meeting the rule may elect two board members, who then represent all small chapters. Board members serve for three-year terms.