| August 16-17, 20-21, 2012 |
Student Orientation (grades 10-12) |
| August 22, 2012 |
First Day of School - Freshmen |
| August 23, 2012 |
First Day of School - All Students |
| August 29, 2012 |
Parent Open House (Last Names A-L) |
| August 30, 2012 |
Late Arrival |
| September 3, 2012 |
Labor Day - No School |
| September 6, 2012 |
Parent Open House (Last Names M-Z) |
| September 7, 2012 |
Late Arrival |
| September 13, 2012 |
Late Arrival - Teacher Planning |
| September 15, 2012 |
Spirit Fest |
| September 17, 2012 |
Rosh Hashanah - Non-Attendance Day |
| September 18-22, 2012 |
Homecoming Week |
| September 22, 2012 |
Homecoming Dance |
| September 26, 2012 |
Yom Kippur - Non-Attendance Day |
| October 4, 2012 |
End of First Six-Week Grading Period |
| October 5, 2012 |
Teacher Institute - No School |
| October 8, 2012 |
Columbus Day - No School |
| October 18, 2012 |
Late Arrival - Staff Development |
| October 24, 2012 |
PLAN/EXPLORE/Practice ACT (Late Arrival for Seniors) |
| November 8, 2012 |
Late Arrival - Teacher Planning |
| November 16, 2012 |
End of Second Six-Week Grading Period |
| November 21, 2012 |
Early Dismissal - Classes End at 2:30 |
| November 22-23, 2012 |
Thanksgiving Break - No School |
| December 13, 2012 |
Late Arrival - Staff Development |
| December 24, 2012-Jan. 4, 2013 |
Winter Break |
| January 7, 2013 |
Classes Resume |
| January 11, 2013 |
End of Third Six-Week Grading Period |
| January 14-16, 2013 |
Semester Exams |
| January 17, 2013 |
Institute Day - No School |
| January 18, 2013 |
Non-Attendance Day |
| January 21, 2013 |
Martin Luther King Jr. Day - No School |
| January 31, 2013 |
Late Arrival - Teacher Planning |
| February 4-9, 2013 |
Winterfest |
| February 9, 2013 |
Winterfest Dance |
| February 14, 2013 |
Late Arrival - Staff Development |
| February 18, 2013 |
Presidents Day - No School |
| March 1, 2013 |
End of Fourth Six-Week Grading Period |
| March 4, 2013 |
Casimir Pulaski Day - No School |
| March 14, 2013 |
Late Arrival - Teacher Planning |
| March 25-29, 2013 |
Spring Break |
| April 11, 2013 |
Late Arrival - Staff Development |
| April 19, 2013 |
End of Fifth Six-Week Grading Period |
| April 23-24, 2013 |
Prairie State Achievement Exams |
| May 6-10, 13-17, 2013 |
Advanced Placement Exams |
| May 27, 2013 |
Memorial Day - No School |
| May 31, 2013 |
End of Sixth Six-Week Grading Period |
| June 3-5, 2013 |
Final Exams for Seniors |
| June 4-6, 2013 |
Final Exams for Freshmen, Sophomores and Juniors |
| June 6, 2013 |
Graduation |
| June 10-July 3, 2013 |
Summer School Session 1 |
| July 8-August 1, 2013 |
Summer School Session 2 |