The wide variety of contexts in which good teaching takes place, a desirable circumstance from most points of view, creates problems, not the least of which is evaluation. Systematic observation is one measurement procedure that can provide some of the data essential to reliable observation. The fourteenth National Symposium for Professionals in Evaluation and Research (NSPER) focused on the development of observation scales, checklists, and rating scales as well as other topics. This report of the three NSPER:80 sessions is a record of the presentations; in addition, each article has been revised to incorporate ideas that emerged from two and one half days of discussion at each site. Contents of this publication include: (1) "Classroom Observation: Potential and Problems" (Thomas L. Good); (2) "Research on Teaching as a Basis for the Evaluation of Teaching" (John A. Zahorik); (3) "Qualitative Versus Quantitative Approaches to Observing Teaching" (John A. Zahorik); (4) "Values as a Basis for the Evaluation of Teaching" (John A. Zahorik); (5) "What Research Says about the Components of Teaching" (Larry A. Braskamp); (6) "Components of Teaching Based on Values and Valuing" (Larry A. Braskamp); (7) "Guidelines for Using Rating Scales and Checklists" (Larry A. Braskamp); (8) "Techniques for Systematic Observation" (Robert B. Ingle); (9) "Developing Rating Scales and Checklists" (Robert B. Ingle); and (10) "Components of a Humane System for Evaluating Teaching" (William J. Gephart). (JMK)