Trends over the past 25 years in research on evaluation of school administrative leadership are analyzed in this summary report. Administrator evaluation became a concern as the principal's influence on the performance and attitudes of faculty and staff was realized. Research on organizational psychology demonstrated the relationship between leadership effectiveness and subordinates' confidence. Recent research in school improvement stresses teacher attitudes toward the role of principal. Although surveys show that teachers and administrators believe they should make decisions about teaching and evaluation procedures together, findings also indicate teachers have a lack of knowledge about the issues involved in teacher evaluation. Early research on principals tended to focus on leadership traits, which were, for example, described as either "authoritarian" or "democratic" in nature. Henry Mintzberg's (1973) research established an undisputed administrative model based on the finding that leadership style had more influence on managers' work behavior than did situational variables. More recent research has investigated the relationship between the perceived leadership style of principals and the acceptance of teachers in professional matters. Attitude surveys attempt to balance the variables of a leader's personality characteristics, the type of situation, and subordinates' personality characteristics as determinants of the most effective leadership practices. Investigators can now state that leadership research cannot specify the proper practices for all situations. A 3-page bibliography is appended. (CJH)