Six research papers that have been published by the staff of the Center for Statewide Educational Assessment at Educational Testing Service are presented. In "A Selection of Self Concept Measures," Joan Knapp explores questions of defining and measuring self concept. In another paper, she examines some problems of measuring attitudes toward school. In both papers she comments upon the use and value of a number of instruments. Richard Jaeger's paper, "A Primer on Sampling for Statewide Assessment," is designed to help the reader meet a sampling expert at least half way. In "The Use of Correlates of Achievement in Statewide Assessment," Paul Campbell outlines testing strategies that take into account the relationship between learning conditions and achievement. John Fremer suggests ways to determine what should be measured, whether newly developed or existing instruments should be used, and what types of reports are needed in his paper, "Developing Tests for Assessment Programs: Issues and Suggested Procedures." In the final paper of this volume, "Statewide Assessment: Methods and Concerns," Nancy Bruno, Paul Campbell, and William Schabacker present a comprehensive guide for state assessment personnel. Their step-by-step approach provides answers to these questions: How do we involve the community in testing programs? How can data presentations be designed for laymen? How can we take the noncognitive effects of school into account? (RC)