Background: School bullying has been recognized worldwide as the most common form of school violence. School bullying has frequently been associated with adverse behavioral, emotional and social consequences. This study aimed to assess the prevalence and demographic characteristics of school children involved in bullying in urban Rohtak, Haryana. Methods: This is a cross-sectional study wherein 370 middle school children were evaluated for school bullying. Socio-demographic information was collected using a separate performa and all the children completed the Korean–Peer Nomination Inventory. Results: The results of this study showed that 43% of school children were involved in bullying, with further categorization of victims, perpetrators and victim-perpetrators being 19%, 18% and 6% respectively. Boys outnumbered girls in all the three categories. Most of the perpetrators belonged to high-income families. Conclusions: School bullying is highly prevalent in middle school children and demographic characteristics can help to identify such children.