In studies it is found that Students' mental stability can be restored by comfort from a familiar home environment and support from their parents. However, many boarding students face various psychological and physical problems by themselves and cannot benefit from home care. This study is to examine psychological and emotional stress among students living in a dormitory. Between October and November 2014, 124 students (74 male, 50 female) were enrolled at Korea International School (KIS) in Jeju, South Korea. By the Zung Selfrating Depression Scale (ZSDS), they were divided into two groups: the normal group and the depression group. I evaluated each group under the following circumstances: (1) individual school life, (2) physical health, (3) factor analysis of ZSDS. The Statistical Package for Social Sciences Software (SPSS-version 21) was used to analyze the data. 45.9% of all enrolled students scored in the mild to moderated depression range. Female students had a more prevalent depression rate (female: 54%, male: 41%). There was nearly no statistical difference in physical symptoms, except for dyspepsia, arthralgia, and lower back pain in the normal and depression groups respectively (P<0.05). The normal range group students had more study and exercise time. In the factor analysis of ZSDS, the depressive group had a more manifest depressed mood and 50 percentage higher ZSDS items score than the normal group: core depressive factor, anxiety factor.