In Regulations .19 and .20 of this chapter, the following terms have the meanings indicated. Terms Defined. “Conviction of or adjudication of” means that the perpetrator has been convicted of, adjudicated delinquent of, pleads guilty or nolo contendere with respect to, or receives probation before judgment with respect to, a violent criminal offense. “Corrective action plan” means a plan that includes information concerning conditions in the school that may have contributed to the commission of the offenses set forth in §B(4) of this regulation. A corrective action plan shall describe any behavioral interventions that will be used to address problems in the school. “Local school system” means any of the 24 local public school systems in the State. “Persistently dangerous school” means a school in which each year for 3 consecutive school years, the total number of student suspensions for more than 10 days or expulsions for any of the following offenses equals 2-1/2 percent or more of the total number of students enrolled in the school: Arson or fire; Drugs; Explosives; Firearms; Other guns; Other weapons; Physical attack on a student; Physical attack on a school system employee or other adult; and Sexual assault. “Safe school” means a school that has not been placed on probationary status or designated as persistently dangerous pursuant to Regulation .19 of this chapter. “School grounds” means a local school system owned or leased building and land that surrounds a school building and also includes school vehicles. “Violent criminal offense” means a crime of violence as defined in Criminal Law Article, §14-101, Annotated Code of Maryland.