Aim: The aim of this research is to determine the frequency of internet violence among high school students in the Vukovar-Syrium County. Sub-goals of research: to examine the inclusion of students in internet violence in relation to the school they attend, to examine the students’ knowledge about what is understood by the term internet violence in relation to the school they attend. Respondents and methods: The research respondents were adult students who attend the Health and Veterinary high school as well as the Agricultural-Forestry high school in Vukovar-Syrium county. 160 respondents of both genders participated. Results: Research was carried out on 160 students, of which 100 are students from the Health and veterinary high school and 60 are from the Agricultural-Forestry high school. 149 (93%) students had heard of the term electronic violence, internet violence or Cyberbullying, of which a significantly higher number are from the Health and Veterinary high school. 50 (31%) allege that violence on social networks is mockery (comments, photos), of which a significantly higher number are students from the Agricultural-Forestry high school, while 97 (60%) allege that everything which was mentioned (“all of the above”) is violence on social networks, of which 72 (72%) are Health and Veterinary high school students. Of the total of 36 students who have been victims of violence, there is a significantly higher number of students from the Health and Veterinary high school. A significantly higher number of students from the Health and Veterinary high school have made negative comments about a person or sent disturbing messages in relation to the students from the Agricultural-Forestry high school. Conclusion: based on the research it can be concluded that internet violence is more common in the Health and Veterinary high school and they are better acquainted with the term internet violence.