Student Support Services

Criteria for Designating Persistently Dangerous Schools - through the 2020-21 School Year

Each school year…the Department shall establish a school violence index as a comparative measure of the level of school violence in a school. The school violence index (SVI) will be computed in accordance with a formula established by the Commissioner that considers the enrollment of the school and is weighted to reflect the most serious violent incidents, which shall include, but need not be limited to the following categories of incidents: homicide, forcible sexual offense, and incidents involving the possession, use, or threatened use of a weapon. 8 NYCCR §100.2 (gg)

Persistently Dangerous Criteria through 2020-21 School Year

Schools may be designated as persistently dangerous if they meet the following criteria:

If for two consecutive school years (eg. both 2018-19 AND 2019-20) a school has EITHER:

  • An SVI of 1.5 or greater; OR
  • An SVI of 0.5 or greater AND a total of 60 or more serious incidents

THEN the school may be designated as persistently dangerous.

The School Violence Index (SVI) through 2020-21 School Year

The 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.


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




Forcible Sex Offenses


Other Sex Offenses


Assault: Serious Physical Injury


Assault: Physical Injury


Weapons Possession: Routine Security Check


Weapons Possession: Other


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. You can use the fillable SVI worksheet to calculate SVI.

Last Updated: September 10, 2021