August 8-19 (10 days) Professional Development
August 22 First Day of School
September 5 Labor Day
October 10 Columbus Day
November 21-25 Thanksgiving
December 20 Last Day before Christmas Break
December 21-January 2 Christmas Break
January 3 Return From Christmas Break
January 16 Martin Luther King Day
February 20 President’s Day
March 20-24 Spring Break
April 7 Good Friday
May 29 Memorial Day
May 31 Last Day of School
June 1,2,5,6,7 Five Weather Make-Up Days
Quarter 1 – Begins Monday August 22 - Ends Tuesday October 18th 40 Days
Quarter 2 – Begins Wednesday October 19th - Ends Tuesday December 20th 40 Days
Quarter 3 – Begins Tuesday January 3rd - Ends Wednesday March 15th 50 Days
Quarter 4 – Begins Thursday March 16th - Ends Wednesday May 31st 48 Days
1st Semester 80 Instructional Days
2nd Semester 98 Instructional Days
Total: 178 Instructional Days
Original source can be found here.