This article primarily concerns student-related bullying at school. For teacher-related bullying at school, see Bullying in teaching.School bullying is a type of bullying that occurs in an educational setting. Bullying can be physical, sexual, verbal or emotional in nature.School bullying may be more specifically characterized by: An intention to harm: intention suggests that the harm caused by bullying is deliberate, not accidental. Victimization distress: bullying causes the victim to suffer mild to severe psychological, social or physical trauma. Repetition: bullying is persistent; it happens more than once or has the potential to occur multiple times. Power inequity: definitions of bullying often state that bullying includes a real or perceived imbalance of power between the bully and the victim. This characteristic is disputed, as both bullies and victims have reported that the conflict and/or behaviours most commonly occur between two equals. Provocation: bullying is proposed to be a part of progressive aggression: motivated by perceived benefits of their aggressive behaviours.The long-term effects of school bullying are numerous, and can include sensitivity, anxiety, and depression. Recent statistics suggest that the majority of students will experience bullying at some point in their academic careers. In the early 21st century, increasing attention has been given to the importance of teachers and parents understanding and recognizing the signs of bullying (among both bullies and victims), and being equipped with strategies and tools to address school bullying.