This report on the need for compulsory, standardized procedures for the certification of librarians (1) provides an historical overview of the subject; (2) identifies three types of certification: compulsory, permissive, and voluntary; (3) outlines current certification practices, requirements, and standards for school librarians; (4) reviews the major arguments for standardized, mandatory certification; (5) describes the certification systems used in Great Britain and Canada; and (6) discusses a California proposal for standardized, statewide certification. References are provided. (FM)