As used in this article,

“Chief school administrator” shall mean the superintendent of a public school district, superintendent of an area career and technical school, executive director of an intermediate unit or chief executive officer of a charter school.

“School entity” shall mean any public school district, intermediate unit, area career and technical school or charter school.

“School-based diversion programs” shall mean programs and interventions designed to redirect youth who commit minor offenses in school from exclusionary disciplinary practices or formal processing in the juvenile justice system, while still holding the student accountable for the student's actions. These programs include, but are not limited to, youth aid panels, positive youth development programming, teen/youth courts, restorative justice interventions, truancy prevention and intervention programs, mentoring programs and intervention programs and educational practices to assist students with persistent disruptive and serious problem behaviors.

“School property” shall mean any public school grounds, any school-sponsored activity or any conveyance providing transportation to a school entity or school-sponsored activity.

“School-wide positive behavior support” means a school-wide, evidence-based tiered framework for supporting students' behavioral, academic, social, emotional and mental health.

“Weapon” shall include, but not be limited to, any knife, cutting instrument, cutting tool, nunchaku, firearm, shotgun, rifle and any other tool, instrument or implement capable of inflicting serious bodily injury.