Characteristics of school bullies and victims identified in the professional literature vary widely. This study turned these characteristics into a survey that included 70 potential characteristics. A world-wide group of 14 experts were asked to rate the importance of each characteristic in identifying either bullies or victims. The results demonstrated strong agreement on 19 characteristics for bullies and 19 for victims. Results of the study are discussed as well as the potential value of this data for increasing understanding of these groups, early identification of potential problem students, and the relationship of the results to prevention and intervention models.