The aims of this study is to exterminate and find out the reason of school-violence
by analysing the psychological characteristics of bullies and the bullies’ types.
Generally, because the school bullies have the problems in self-esteem, they feel
‘jealousy’ and ‘frustration’. They cause school-violence through behavior disorder.
Concretely, borderline behavior disorder and narcissistic behavior disorder are more
likely to cause the school-violence.
The types of school-violence bullies would be classified into seven forms; ‘enjoy
violence’, ‘stress solution’, ‘rationable violence’, ‘sorry to violence’, ‘play cold’, ‘the
ruling class’, ‘bullying by fear’. The understanding of these forms makes it easy to
educate the bullies for teachers and parents. And it may lead to early intervention and