The purpose of this study is to find out the difference in school students' own considerations about their self-image based on their gender, school (elementary, middle, high), educational grade, school and educational grade in gender, and educational grade in school. To achieve this end, the study surveys 617 students who participate in the study from elementary schools, middle schools, high schools located in Jeollanam-do. The study uses a questionnaire to examine students thoughts of self-image. This questionnaire is based on SIQYA revised by Hong Eun Ju (1997). All questions in the questionnaire have been updated from a previous study which referred to parents instead of teachers. The information was gathered in person from all participating schools. The collected data were analyzed through Cronbach α, t-test and ANOVA. The results of the study are as follows: First, by gender, male students reported higher scores than female counterparts in the field of emotional tone, mental health, relationship with friends. Second, by educational grade, elementary school students marked the identify best with self-image in all fields followed by middle and high school students. Third, by educational grade, students with medium to high grades are better than students with low grades in the fields of emotional tone, mental health, and relationship with teachers and friends. Fourth, by school in gender, male elementary school students and middle school students had better self-image than male high school students in the field of emotional tone, impulse control, relationship with friends, and disposal ability. And female elementary school students mark the identify best with self-image in all fields. fifth, educational grade in gender, male students with medium to high grades are better than male students with low grades in the fields of mental health and relationship with friends. Female students with medium to high grades are better than female students with low grades in the fields of emotional tone, mental health, and relationship with teachers and friends. Sixth, by educational grade in school, middle school students with medium to high grades are better than lower grade students in the fields of emotional tone and mental health. Elementary school students and high school students do not show difference in their self-image based on their educational grade. Key words : Student, Self-image, gender, school(elementary, middle, high), educational grade