Abstract
The educational system discussed here is the one which permits the students to discuss over their test answers. The system is performed in the way that the teacher gives a test problem to the students and evaluates them, then, divides them into groups based on the information of the evaluated results and let them discuss over their test answers in each group. As for the system, this paper presents following two contents. Firstly, how to divide the class into groups is discussed. The authors classify test problems into two types and establish the grouping algorithm for each type. Secondly, a questionnaire of the educational system mentioned above is discussed. It consists of "utility of the system", "motivation" and "personality".
