In the spring, the Du Quoin CUSD 300 Board of Education adopted a calendar for the upcoming 2021-2022 school year. Here are important dates for 2021-2022 in District 300:
- Tuesday, August 17 - The first day of attendance for students. 
- Friday, August 20 - NO SCHOOL - Regional Teacher Institute Day 
- Monday, September 6 - Labor Day - No school 
- Friday, September 24 - Half-day for student attendance 
- Wednesday, Oct. 6 - Parent/Teacher Conferences (3:30-6:30 PM) 
- Thursday, Oct. 7 - NO SCHOOL - Parent/Teacher Conferences (8:00-11:00 AM) 
- Friday, Oct. 8 - Monday, Oct. 11 (Columbus Day) - NO SCHOOL 
- Thursday, November 11 - Veterans Day - NO SCHOOL 
- November 24-26 - Thanksgiving break - NO SCHOOL 
- Tuesday, December 21 - Half-day for student attendance, End of 1st Semester 
- December 22-31 - Christmas break - NO SCHOOL - School resumes on Monday, Jan. 3 
 
- Monday, January 17 - Dr. Martin Luther King, Jr. Day - NO SCHOOL 
- Monday, February 14 - Half-day for student attendance 
- Monday, February 21 - Presidents Day - NO SCHOOL 
- Wednesday, March 9 - Half-day for student attendance 
- March 10-14 - Spring break - NO SCHOOL - School resumes on Tuesday, March 15 
 
- April 15-18 - Easter weekend - NO SCHOOL 
- May 27 - Tentative last day of school 

