A study was designed to evaluate the level of moral development of 197 nursing students from five nursing schools in Korea. Data was collected through a self-reported questionnaire completed between March and April 2006. The Korean version of the DIT (Rest’s Defining Issues Test) was used to evaluate the level of moral development as measured by the score of P and stage 4. The data was analyzed by a t-test, ANOVA. The results were as follows: 1) the mean score of P and stage 4 was 41.79 and 16.31 respectively; 2) the score of P did not reveal statistically significant differences with respect to demographic variables; 3) The score of stage 4 revealed significant differences related to the level of education of each participant’s mother. These results indicate that moral development is not influenced by demographic variables. We recommend that a database of DIT scores for students in nursing and other medical fields be created. Such a database would be helpful for the further development of nursing ethics curricula.