Herndon High | Upcoming Events | Date & Time |
| Fall Sport Physical & Registration Due (Required for try-outs) | Thu 07/30/2026 11:30 am - 12:00 pm |
| Golf: Boys Varsity at TBA | Tue 08/04/2026 4:00 pm - TBD |
| Golf: Girls Varsity at TBA vs. TBA | Tue 08/04/2026 4:00 pm - TBD |
| Volleyball: Girls Freshman at TBA vs. TBA | Tue 08/04/2026 4:00 pm - TBD |
| Sideline Cheer Fall: Varsity at TBA | Tue 08/04/2026 5:00 pm - TBD |
| Volleyball: Girls JV at TBA vs. TBA | Tue 08/04/2026 5:00 pm - TBD |
| Volleyball: Girls Varsity vs TBA | Tue 08/04/2026 7:00 pm - TBD |
| Virginia’s Sales Tax Holiday | Fri 08/07/2026 (All Day) |
| Virginia’s Sales Tax Holiday | Sat 08/08/2026 (All Day) |
| Virginia’s Sales Tax Holiday | Sun 08/09/2026 (All Day) |
| Math Summer Boot Camp | Mon 08/10/2026 8:00 am - 11:00 am |
| Math Summer Boot Camp | Tue 08/11/2026 8:00 am - 11:00 am |
| Math Summer Boot Camp | Wed 08/12/2026 8:00 am - 11:00 am |
| Math Summer Boot Camp | Thu 08/13/2026 8:00 am - 11:00 am |
| First Day for Teachers | Fri 08/14/2026 (All Day) |
| Hornet Fest | Tue 08/18/2026 5:00 pm - 6:30 pm |
| Freshman & New Student Parent Meeting | Tue 08/18/2026 6:30 pm - 7:30 pm |
| Student Schedules Available | Thu 08/20/2026 6:00 am - 7:00 am |
| Senior Portraits | Thu 08/20/2026 9:30 am - 2:00 pm |
| Freshmen and New Student Orientation | Fri 08/21/2026 9:00 am - 11:15 am |
| Senior Portraits | Fri 08/21/2026 9:30 am - 2:00 pm |
| First Day of School | Mon 08/24/2026 (All Day) |
| Labor Day Break (Holiday) | Fri 09/04/2026 (All Day) to Mon 09/07/2026 (All Day) |
| Holiday (Yom Kippur) | Mon 09/21/2026 (All Day) |
| SAT School Day and PSAT/NMSQT 2026 | Wed 10/07/2026 (All Day) |
| Student Holiday (Staff Development Day) | Mon 10/12/2026 (All Day) |
| End of First Quarter - Two-Hour Early Release | Fri 10/30/2026 (All Day) |
| Student Holiday (Teacher Workday) | Mon 11/02/2026 (All Day) |
| Student Holiday (School Planning Day) | Tue 11/03/2026 (All Day) |
| Holidays (Thanksgiving Break) | Wed 11/25/2026 (All Day) to Fri 11/27/2026 (All Day) |
| Holidays (Winter Break) | Mon 12/21/2026 (All Day) to Fri 01/01/2027 (All Day) |
| Holiday (Martin Luther King Day) | Mon 01/18/2027 (All Day) |
| End of Second Quarter - Two-Hour Early Release | Thu 01/28/2027 (All Day) |
| Student Holiday (Teacher Workday) | Fri 01/29/2027 (All Day) |
| Student Holiday (Staff Development Day) | Mon 02/01/2027 (All Day) |
| Holiday (Washington’s Birthday and Presidents’ Day) | Mon 02/15/2027 (All Day) |
| Holiday (Eid al-Fitr) | Wed 03/10/2027 (All Day) |
| Holidays (Spring Break) | Mon 03/22/2027 (All Day) to Fri 03/26/2027 (All Day) |
| End of Third Quarter - Two-Hour Early Release | Fri 04/16/2027 (All Day) |
| Student Holiday (Teacher Workday) | Mon 04/19/2027 (All Day) |
| Student Holiday (Staff Development Day) | Tue 04/20/2027 (All Day) |
| Holiday (Eid al-Adha) | Mon 05/17/2027 (All Day) |
| Holiday (Memorial Day) | Mon 05/31/2027 (All Day) |
| Last Day of School (Early Release) | Wed 06/16/2027 (All Day) |
| Holiday (Juneteenth, Observed) | Fri 06/18/2027 (All Day) |
| Teacher Workday | Mon 06/21/2027 (All Day) |
Tandem
