SSCS follows Seminole County Public School Calendar.
SEMINOLE SCIENCE CHARTER SCHOOL
2019–2020 ACADEMIC CALENDAR
| August 2-9 | Pre-Planning/ Staff Development |
| August 12 | First Day of School for Students |
| August 12 | Beginning of 1st Marking Period |
| September 2 | Holiday (Labor Day) |
| October 16 | End of 1st Marking Period |
| October 17-18 | Student Holiday |
| October 21 | Beginning of 2nd Marking Period |
| November 25-29 | Thanksgiving Break |
| December 17-19 | Early Release |
| December 19 | End of 2nd Marking Period |
| December 20 | Student Holiday |
| December 23-January 3 | Winter Break |
| January 6 | Beginning of 3rd Marking Period |
| January 20 | Holiday (Martin Luther King Jr. Day) |
| February 17 | Holiday (Presidents Day) |
| March 12 | End of 3rd Marking Period |
| March 13 | Student Holiday |
| March 16-20 | Spring Break |
| March 23 | Begin 4th Marking Period |
| May 22, 26-27 | Early Release |
| May 25 | Holiday (Memorial Day) |
| May 27 | End of 4th Marking Period |
| May 27 | Last Day for Students |