Presents school librarian certification requirements in all 50 states and the District of Columbia, alphabetically by state in two tables: "Certification Requirements" (listing state/date; certificate or endorsement; educational program, experience and recommendation; tests) and "Knowledge/Subject Areas/Competencies" (listing state; administration; technology/audiovisuals; cataloging; reference; literature; selection; practicum). Provides contact information for state credentialing agencies. (AEF)