Through May 31, the school reported 69 assaults, the majority in the first half of the year before an outcry over the violence resulted in a safety overhaul. It also had 10 weapons incidents.
Edison High had the highest number of assaults last year of any school on the list: 78. It also reported 22 weapons incidents.
Criteria for landing on the list vary from state to state. To make the list in Pennsylvania, a school with an enrollment of 250 or less must have at least five incidents; a school between 251 to 1,000, a number of incidents equal to at least 2 percent of enrollment; a school over 1,000, 20 or more incidents.