Abstract
The purpose of this study is to examine the technique of idiographic cluster analysis for a single classroom climate. The method is the application of PAC (personal attitude construct) Analysis by Naito (1993). The subject who is an ex-teacher elicited free associations about the case of the worst management of her classes. She estimated the degree of the similarity of all pairs of association items. Cluster analysis was done by the similarity matrix. Then she was asked to interpret the clusters and describe the contents. The same procedure was followed in the case of the best management. The results of both cases suggested the utility of this technique for analysis of a single classroom climate and assessment of its teacher.
