There are two major accrediting organizations for parliamentarians:
National Association of Parliamentarians (NAP)
The NAP was established in 1930 and is the largest organization of parliamentarians in the world. Persons become "regular members" by passing a 100-question qualifying exam. Regular members can become a "registered parliamentarian" (or "RP") by successfully completing a comprehensive, proctored examination covering the entire 700 pages of Robert's Rules of Order Newly Revised (10th ed.). According to the NAP website, the exam tests knowledge in four areas of parliamentary procedure: "Motions and related procedures; meetings; officers, boards, committees, voting, and elections; and rules of the assembly. The exam also requires a level of familiarity with Robert's Rules of Order Newly Revised that enables the RP to effectively research parliamentary questions quickly, as is often required in a meeting situation. Once Registered Parliamentarian status is achieved, it is retained for as long as membership in the National Association of Parliamentarians is maintained."