During the last twenty years there has been extensive research on identifying risk factors of school violence. Especially the concept of school climate has received increased attention.

Most importantly, the social climate in class and in school is assumed to have a significant effect on the prevalence of violence in schools. But, the lack of clear definitions and empirically validated measures of school climate has resulted in a multitude of findings that are often difficult to interpret.

via Study Confirms Link Between School Climate And Violence.