Here's the 2013-14 Ada school calendar.

New Teacher Day August 13, 2013
Professional Development Day for All Staff August 14, 2013
Prep Day for All Teachers & Open House  August 15, 2013
Opening Day of School  August 19, 2013
 

No School - Labor Day  September 2, 2013
No School - Hardin Co. Fair Day  September 3, 2013
No School - Veteran's Day November 11, 2013
No School - Thanksgiving Break November 28-29, 2013
No School - Christmas Break December 23, 2013 - January 5, 2014
 

First Day of School After Break January 6, 2014
No School - Martin Luther King Day January 20, 2014
No School - President's Day February 17, 2014
No School - Easter Break April 18 - 21, 2014
First Day of School After Break  April 22, 2014
Last Day for Seniors May 19, 2013
Last Day for Classes (K-11) May 22, 2014
Teacher's Work Day May 23, 2014
Commencement May 25, 2014