Actually there are many causes which would be resulted to school violence. There is a racial discrimination of which the concern teenager who has been discriminated may revenge to the specific persons.

hate... kids learn to hate at home and they bring it in school causing school violence.  race and gender and other differences are just some of the added "spice" into the mix.

the exact cause of school violence is the individual's behavior. oftentimes, a child who's having problems at home are the ones who started troubles at school.

they are just factors that complicate the issue of school violence.  but in my opinion:  family.

bad family situation = violence.

the bullies are the cause! because they are attention seeking, immature bullies!

cause of violence is violence itself.  you remember in the bible it says: violence begets more violence.  ergo, violence is the cause of violence.

violence can be a result of many things. thing is, no matter what the reason is, it should be stopped immediately before it even gets worse.