The purpose of the studies were to investigate the attitudes of junior high school teachers, school administrators and students’ parents toward the issues of different groupings of students based on different criteria in instructional programs. Three questionnaires were administered to 3 samples of 5000 teachers, 1000 school administrators, 5000 students´ parents respectively drawed from 100 junior high schools, The major findings of the studies were (1) In terms of the effect of different groupings on students´ behavior, parents emphasized academic achievement, whereas teachers considered student´s psychological adjustment. (2) More than a half of people investigated agreed normal grouping in the first year designed by the Ministry of Education in 1982. (3) Different attitudes were found among the samples toward dichotomous division in the second year. The parents of the first group supported the program, whereas the parents of students of the second group objected.