Introduction. Occupational exposure to potentially infectious material (PIM) is a serious problem for healthcare workers, including medical students. Aim. We assessed the state of knowledge about occupational exposure and frequency of exposure among students of selected medical faculties in Poland. Material and methods. Retrospective analysis with proprietary questionnaires. Results. Only 34.5% from 753 respondents correctly indicated bloodborne pathogens and 9.3% PIM. There were 84 reports of exposure, mostly during intravenous injections. 10.4% students claimed probable occupational exposure which was not reported. Most common reason for not reporting was fear of negative supervisor reaction. Conclusion. Student’s knowledge of this matter is poor. Significant percentage of students has never participated in occupational exposure training. Occupational exposure was experienced by surprisingly large number of students. Students are afraid to report the incidents. Additional education would be useful in reducing exposure risk.