The purpose of this study is to investigate whether or not there are significant differences in teacher ratings of student's classroom behaviors between aggregates of students with various variables. Three hundred and eleven boy students and four hundred and seventy-four girl students, sampled from junior high schools in Taiwan are investigated in this study. The results of this study are as follows: 1) There is significant difference between teacher ratings of classroom behaviors of high-achieved and low-achieved students. 2) There is no significant difference in teacher ratings of classroom behaviors among the students of different socio-economic levels, except in the behavior category of invelvement in class activities and in the junior cohort of girls. 3) The relationship between student's classroom behaviors rated by their teachers and student's value orientation patterns are not significant. Following are some suggestions with reference to education and guidance: (1) to impove the assessment of student's classroom behaviors; (2) to strengthen the instruction and guidance of student's classroom behaviors; and (3) to continue and expand the study of the problem of student classroom behaviors.