Complete school year calendar for Syosset CSD — one of Long Island's most academically acclaimed school districts, known for exceptional STEM programs and national rankings. Includes all holidays, breaks, half days, and important dates from September 2026 through June 2027.
| Event | Date(s) | Status |
|---|---|---|
| First Day of School | September 1, 2026 (Tue) | School Opens |
| Labor Day | September 7, 2026 (Mon) | No School |
| Yom Kippur | September 21, 2026 (Mon) | No School |
| Columbus Day | October 12, 2026 (Mon) | No School |
| Election Day | November 3, 2026 (Tue) | Supt. Conf. Day |
| Veterans Day | November 11, 2026 (Wed) | No School |
| Thanksgiving Recess | November 25–27, 2026 (Wed–Fri) | No School |
| Winter Recess | Dec 24, 2026 – Jan 1, 2027 | No School |
| Rev. Dr. Martin Luther King Jr. Day | January 18, 2027 (Mon) | No School |
| Presidents' Week | February 15–19, 2027 (Mon–Fri) | No School |
| Eid al-Fitr | March 9, 2027 (Tue) | No School |
| Easter Break | March 25–26, 2027 (Thu–Fri) | No School |
| Spring Recess (Passover) | April 22–30, 2027 (Thu–Fri) | No School |
| Eid al-Adha | May 17, 2027 (Mon) | No School |
| Memorial Day | May 31, 2027 (Mon) | No School |
| Juneteenth (Observed) | June 18, 2027 (Fri) | No School |
| Last Day of School | June 25, 2027 (Fri) | School Closes |
Complete month-by-month calendar from September 2026 to June 2027. Every day is color-coded so you can see school days, holidays, and breaks at a glance.
The Syosset Central School District 2026-2027 school year serves approximately 6,600 Nassau County students across its 10 highly-ranked buildings. This calendar is a crucial tool for one of New York's most academically demanding communities.
Syosset's schedule is meticulously designed around intensive academic pacing, Advanced Placement testing, and college-preparatory milestones. The calendar is also notable for its broad cultural responsiveness—building in recess days for Diwali, Lunar New Year, and Eid al-Fitr to accommodate the vibrant, diverse communities of Oyster Bay town.
For easy reference, use the button at the top of this page to download a free, color-coded printable Syosset school calendar for your fridge or desk.
Data Source: Official Syosset Central School District calendar publication.
Disclaimer: This website is not affiliated with, endorsed by, or connected to Syosset Central School District or the New York State Education Department (NYSED). For the most current and official calendar, please visit www.syossetschools.org.
Official calendars can still change. Always confirm updates with the district before making plans.
Last updated: March 17, 2026