This document outlines the calendar for the 2012-2013 school year for Prince William County Public Schools. It includes the dates for holidays, breaks, teacher workdays, grading periods, and report card distribution. The school year consists of 182 days for elementary schools and 183 days for middle and high schools, running from August to June. The calendar notes the number of instructional and work days for each month and provides interim and report card schedules for the first and second semesters.