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.