| August 17: | Parent Orientation |
| August 18: | 9-12 Student Retreat |
| August 21: | Student Orientation (Early Dismissal) |
| August 22: | First Full Day of First Semester |
| September 25: | Mark Twain Conference PD Day - No School |
| October 12: | CofO Fall Convocation |
| October 20: | Fall Break - No School |
| October 28: | ACT at SofO |
| November 20: | Thanksgiving Break November 20-24 |
| December 14: | Last Day of First Semester (Early Dismissal) |
| December 15: | Christmas Break December 15-January 8 |
| January 08: | Teacher Work Day |
| January 09: | First Day of Second Semester |
| March 01: | Classical Christian Education Conference March 1-2 (No School) |
| March 11: | Spring Break March 11-15 |
| March 21: | CofO Spring Forum (tentative) |
| March 29: | Good Friday (No School) |
| April 13: | ACT at SofO 9-12 Spring Formal |
| May 08: | Seniors Last Day/Graduation Rehearsal/Junior-Senior Banquet |
| May 09: | Last Day of Second Semester (Early Dismissal) |
| May 09: | SofO Graduation (Williams Memorial Chapel, 6:00pm) |