Weather Policy for Archbishop Carroll (Updated December 2007) Archbishop Carroll High School follows Prince George's County Public Schools: If Prince George's County Public Schools are closed, then Archbishop Carroll High School is closed. If Prince George's County Public Schools open two hours late, Archbishop Carroll High School opens two hours late. If Prince George's County Public Schools open one hour late, Archbishop Carroll High School opens one hour late. Once school begins and there is inclement weather, the decision for an early dismissal will be made by the Principal.