The present study was designed to investigate what kind of characteristic teaching pattern was shown by some teachers of special classes for the mentally re tarded, not at the ideational level, but at the more used the rating method dy means of the direct observation by our research members, which we called “observation- rating method”. After we observed directly hese teaching processes shown in the daily classroom situations of the ten classes for the mentally retarded in the ten secondary schools, each one of our members rated each teacher - pupil relationship, each atmosphere in the classroom and each personality characteristics of the teacher, on the seven point scale. As a result, we could find two kinds of the specific characteristic patterns by using the Q-technique of the factor analysis. The first type of teaching patterrn was characterized by the empathic and intimate relationship between teacher and pupil, and on the othei hand, the second type showed somewhat authoritative attitude from teachers side, and then the quiet and/ or rigid atmosphere was observed in this type. We could thus differentiate the above two types of different characteristic teaching patterns in the level of practical teaching situation in the special classes for the mentally retarded. However many other problems must be considered, for instance, the re-examinat; on of the rating items and the training of the rater himself, etc. Therefore we are going to continue our research on these lines because we believe that education for the mentally retarded is strongly influenced by such kinds of concrete teaching patterns.