Discusses current issues in measuring library effectiveness, including rapid technological changes and increasing obsolescence in librarians' competencies; increased pressure for accountability; tools to help libraries become what they determine they should be rather than conforming to national standards; and how to determine the validity and…

Study of 68 school media centers in 11 states was conducted to field-test collection mapping as a technique and to amass enough data to enable individual schools to compare their collections with national pool of school collections. Collections of participating schools were also compared to nationally recognized selection lists. (CDD)