Interestingly, only 7% of the schools accounted for 50% of the total violent incidents.Enrollment size was a primary indicator of both violent incidents and serious violent incidents. Dinkes, Cataldi, and Lin-Kelly (2007, iv) found that “from July 1, 2005,through June 30, 2006, there were 14 homicides and 3 suicides of school-age youth (ages 5-18) at school…or about 1 homicide or suicide of a school-age youth at school per 3.2 million students enrolled during the 2005-06 school year.”