08/21/2011 Open for All Classes - First Day of fall semester
 08/28/2011 Open for All Classes
 09/04/2011 No school
 09/11/2011 Open for All Classes - Last day to withdraw with refund; last day allowed to switch classes
 09/18/2011 Open for All Classes
 09/25/2011 Open for All Classes - OCCS Moon Festival & National Day Celebration (4:30 - 7:45pm)
 10/02/2011 Open for All Classes
 10/09/2011 Open for All Classes
 10/16/2011 Open for All Classes
 10/23/2011 Open for All Classes
 10/30/2011 Open for All Classes
 11/06/2011 Open for All Classes
 11/13/2011 No school
 11/20/2011 Open for All Classes
 11/27/2010 No school
 12/04/2011 Last day of fall semester; OCCS spring pre-enrollment

 Pre-Enrollment (December 4th - 18th)
 Open Enrollment (December 19th - January 4th)
 

 Pre-Enrollment (December 4th - 18th)
 Open Enrollment (December 19th - January 4th)
 Last day to enroll without a late fee if payment is mailed and postmarked by 1/4/12

 01/08/2012 Open for All Classes - First Day of spring Semester
 01/15/2012 Open for All Classes
 01/22/2012 - No school: 2012 spring festival
 01/29/2012 Open for All Classes - Last day to withdraw with refund; last day allowed to switch classes.
 02/04/2012 Chinese Festival at Westerville HS
 02/05/2012 Open for All Classes
 02/12/2012 Open for All Classes
 02/19/2012 Open for All Classes
 02/26/2012 Open for All Classes
 03/04/2012 Open for All Classes
 03/11/2012 Open for All Classes
 03/18/2012 Open for All Classes
 03/25/2012 Open for All Classes
 04/01/2012 No school: spring break
 04/08/2012 No school: spring break
 04/15/2012 Open for All Classes
 04/22/2012 Open for All Classes
 04/29/2012 Open for All Classes
 05/06/2012 Open for All Classes
 05/13/2012 to 05/27/2012 No school: school closed for Worthington High school activities
 06/03/2012 Year End Commencement