Abstracts are presented of research studies on various methods of teacher evaluation. The purpose of this study was to seek out those factors in evaluation programs that are necessary for enhancing teacher effectiveness. The research studies are organized by four categories: (1) status of teacher evaluation; (2) attributes of successful evaluation programs; (3) problems with typical evaluation programs; and (4) case studies of successful research-based programs. A summary offers an analysis of the types of evaluation programs reviewed and some recommendations are made. A list of references is included. (JD)