Herndon High | Upcoming Events | Date & Time |
| Holiday (Memorial Day) | Mon 05/25/2026 (All Day) |
| Student Holiday (Teacher Workday) | Tue 05/26/2026 (All Day) |
| Baseball: Varsity at TBA vs. TBA | Tue 05/26/2026 3:00 pm - TBD |
| Holiday (Eid Al-Adha) | Wed 05/27/2026 (All Day) |
| Track and Field: Boys Varsity at TBA | Thu 05/28/2026 5:00 pm - TBD |
| Track and Field: Girls Varsity at TBA vs. TBA | Thu 05/28/2026 5:00 pm - TBD |
| Resources Fair for Spanish Speaking Families | Thu 05/28/2026 6:00 pm - 8:00 pm |
| Soccer: Boys Varsity at TBA vs. TBA | Thu 05/28/2026 6:30 pm - TBD |
| Softball: Varsity vs Madison James | Thu 05/28/2026 7:30 pm - TBD |
| Track and Field: Boys Varsity at TBA | Fri 05/29/2026 5:00 pm - TBD |
| Track and Field: Girls Varsity at TBA vs. TBA | Fri 05/29/2026 5:00 pm - TBD |
| Baseball: Varsity at TBA vs. TBA | Fri 05/29/2026 6:30 pm - TBD |
| Honors Ceremony | Mon 06/01/2026 9:45 am - 11:15 am |
| Soccer: Boys Varsity at TBA vs. TBA | Tue 06/02/2026 6:30 pm - TBD |
| Senior Locker Cleanout | Wed 06/03/2026 10:00 am - 10:30 am |
| Senior Final Exam: 6th Pd | Wed 06/03/2026 11:12 am - 1:20 pm |
| Senior Final Exam: 8th Pd | Wed 06/03/2026 1:30 pm - 2:55 pm |
| Baseball: Varsity at TBA vs. TBA | Wed 06/03/2026 6:30 pm - TBD |
| Senior Final Exam: 5th Pd | Thu 06/04/2026 11:12 am - 1:20 pm |
| Senior Final Exam: 7th Pd | Thu 06/04/2026 1:30 pm - 2:55 pm |
| Soccer: Boys Varsity at TBA vs. TBA | Thu 06/04/2026 6:30 pm - TBD |
| Track and Field: Boys Varsity at TBA vs. TBA | Fri 06/05/2026 12:00 am - 11:59 pm |
| Track and Field: Girls Varsity at TBA vs. TBA | Fri 06/05/2026 12:00 am - 11:59 pm |
| Senior Final Exam: 2nd Pd | Fri 06/05/2026 8:10 am - 9:35 am |
| Track and Field: Boys Varsity at TBA vs. TBA | Sat 06/06/2026 12:00 am - 11:59 pm |
| Track and Field: Girls Varsity at TBA vs. TBA | Sat 06/06/2026 12:00 am - 11:59 pm |
| Senior Final Exam: 1st Pd | Mon 06/08/2026 8:10 am - 9:35 am |
| Senior Final Exam: 3rd Pd | Mon 06/08/2026 9:45 am - 11:10 am |
| Legacy Walk | Tue 06/09/2026 9:30 am - 11:30 am |
| Graduation Rehearsal #1 | Tue 06/09/2026 1:30 pm - 3:30 pm |
| Graduation Rehearsal #2 | Wed 06/10/2026 2:30 pm - 4:00 pm |
| Half-Day Bell Schedule | Thu 06/11/2026 (All Day) |
| Underclassmen Final Exam: 6th Period | Thu 06/11/2026 8:10 am - 9:40 am |
| Underclassmen Final Exam: 8th Period | Thu 06/11/2026 9:50 am - 11:20 am |
| Nesty's Varsity Sports Awards Night | Thu 06/11/2026 7:00 pm - 8:30 pm |
| Modified Bell Schedule | Fri 06/12/2026 (All Day) |
| Graduation | Fri 06/12/2026 2:00 pm - 4:00 pm |
| Half-Day Bell Schedule | Mon 06/15/2026 (All Day) |
| Underclassmen Final Exam: 1st Period | Mon 06/15/2026 8:10 am - 9:40 am |
| Underclassmen Final Exam: 2nd Period | Mon 06/15/2026 9:50 am - 11:20 am |
| Half-Day Bell Schedule | Tue 06/16/2026 (All Day) |
| Underclassmen Final Exam: 3rd Period | Tue 06/16/2026 8:10 am - 9:40 am |
| Underclassmen Final Exam: 5th Period | Tue 06/16/2026 9:50 am - 11:20 am |
| Last Day of School (Early Release) | Wed 06/17/2026 (All Day) |
| Labor Day | Mon 09/07/2026 (All Day) |
| Columbus Day | Mon 10/12/2026 (All Day) |
| Halloween | Sat 10/31/2026 (All Day) |
| Daylight Saving Time Ends | Sun 11/01/2026 (All Day) |
| Veterans Day | Wed 11/11/2026 (All Day) |
| Thanksgiving | Thu 11/26/2026 (All Day) |
| Christmas Day | Fri 12/25/2026 (All Day) |
| New Year's Day | Fri 01/01/2027 (All Day) |
| Martin Luther King Day | Mon 01/18/2027 (All Day) |
| Valentine's Day | Sun 02/14/2027 (All Day) |
| Presidents' Day | Mon 02/15/2027 (All Day) |
| Daylight Saving Time Begins | Sun 03/14/2027 (All Day) |
| St. Patrick's Day | Wed 03/17/2027 (All Day) |
| Easter | Sun 03/28/2027 (All Day) |
| Cinco De Mayo | Wed 05/05/2027 (All Day) |
| Memorial Day | Mon 05/31/2027 (All Day) |
| Independence Day | Sun 07/04/2027 (All Day) |
Tandem
