What is the School Violence Index and how is it calculated?

The School Violence Index (SVI) is a ratio of violent incidents to enrollment in a school and is determined by the number of incidents, the seriousness of the incidents, and the school’s enrollment. The table below provides the weights for each type of violent incident that carries a weight.

Incident Category

(These Types of Incidents are Considered to be Serious Incidents)

Weight

Homicide

100

Forcible Sex Offenses

60

Other Sex Offenses

40

Assault: Serious Physical Injury

45

Assault: Physical Injury

30

Weapons Possession: Routine Security Check

1

Weapons Possession: Other

15

Material Incidents of Discrimination, Harassment, and Bullying (all excluding Cyberbullying)

1

Cyberbullying

1

To calculate the SVI for each school, the incident counts for each type of incident are multiplied by the weight for that type of incident and those products are added together to obtain an overall weighted incident total. This total is then divided by the enrollment, which results in the SVI score.