The purpose of this study is to examine the validity of the College of Dentistry transfer system. The study focused on the correlation between entree examination results and class achievement of transfer students and double major students, grades difference according to school year and their major of previous schools. Also, there was the comparison of school life satisfaction among the transfer students, double major students and ordinary students of dentistry school. The result of the research is as follows; First, there was no significant relation between the entree examination results and class achievement of transfer students and double major students, suggesting the entree examination results cannot be a reasonable prediction for class achievements. Second, there was no significant difference in the grades according to school year and their major of previous schools, showing that students can well adjust themselves no matter what their majors are. Third, there was a significant difference in transfer and double major students grades, and showed higher achievement as their school year passed. Fourth, the transfer and double major students were more satisfied in school life than the ordianry students. On the basis of the above findings we can conclude the transfer student system of college of dentistry was successful, but needs some improvements in such as student selection, welfare facilities and school culture.