Preparation and Evaluation of Validity and Reliability Indices of High School Students’ Ethical Behavior Rating Scale

This study aims to prepare, conduct preliminary implementation, and examine the psychometric indicators of the Ethical Behavior Rating Scale for female high school students. The Population of this study was high school students in District 8area of Tehran. Then, from among all female students in the grade 1 and the grade 2 at the second-grade senior high school in district 8 of Tehran, 368 students who had been organized in the 12 classrooms were selected through cluster random sampling method, and the teachers of each class the sample groups, were asked to complete questions of the Ethical Behavior Rating Scale for each student in each class individually. After collecting information, the obtained data were analyzed through factor analysis. The findings showed that these scale questions are mainly focused on two factors, which together explain 59.58% of the total variance. On the other hand, the study of group differences as another evidence of construct validity showed that, from the teachers’ point of view, there is a significant difference between the ethical behavior of the first-grade junior and the second-grade senior high school students, which is in the second-grade senior high school students’ favor. Furthermore, according to teacher’s opinion, there is a significant difference between the ethical behavior of the second-grade senior high school students in mathematics and the ethical behavior of the second-grade senior high school students in humanities, which is in the second-grade senior high school mathematics students’ favor. The reliability of the scale was calculated through retest methods, Cronbachchr('39')s alpha internal consistency, and correlation between significant graders. These findings indicate that the Ethical Behavior Rating Scale is a suitable tool for rating the ethical behavior of high school students and this scale can be used confidently so as to rate the ethical behavior of the second-grade senior high school students.