This study provides overview of the extent of bullying in Lithuanian primary and secondary schools using findings from the 2002 Health Behavior in School-Aged Children (HBSC): WHO Collaborative Cross-National Study. This study examined the prevalence of being bullied and bullying others among 11-, 13- and 15-year-old children. The study was based on the data of three surveys conducted in Lithuania in 1994, 1998 and 2002. The results showed that 36% of boys and 32% of girls were bullied and 40% of boys and 28% of girls were bulling others at least two times a month in the previous couple of months. There was a significant difference in responses according to the living place - higher percentage of pupils living in village reported being bullied as compared with pupils living in town. The extent of bullying among school pupils was similar in 1994-2002. This study showed that the highest percentage of bullying was in Lithuania. CONCLUSION. This study showed that the highest percentage of bullying was in Lithuania. Thus, bullying is a psychological and pedagogical problem connected with public health. It must be solved by various professionals immediately.