Research indicates that four-minute videotape segments may provide the best, most practical diagnostic tool available to supervisors in both preservice and inservice programs. (Author/MLF)

Drawing from research findings, this article identifies five dimensions of teacher evaluation (summative versus formative evaluation, criteria and standards, discernment versus criticism, and arithmetic versus holistic evaluation), then suggests three methods for making holistic judgments about teachers. (Author/JM)

Describes how the Dallas Independent School District uses the research and development concept of context evaluation to help direct changes in instructional systems, materials, and methodology. (Author/JG)