Official Syosset 2026-2027 school calendar with holidays, breaks, PDF, and calendar sync. 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. Dates are manually collected and screened from district-published calendar materials. Printable PDF and Google/Apple Calendar sync options are available below. Updated March 17, 2026.
| Event | Date(s) | Status |
|---|---|---|
| First Day of School | September 1, 2026 (Tue) | School Opens |
| District Closed - Labor Day | September 7, 2026 (Mon) | No School |
| District Closed - Yom Kippur | September 21, 2026 (Mon) | No School |
| District Closed - Columbus Day / Indigenous Peoples' Day | October 12, 2026 (Mon) | No School |
| District Closed - Veterans' Day | November 11, 2026 (Wed) | No School |
| District Closed - Thanksgiving Recess | November 26, 2026 - November 27, 2026 | No School |
| Holiday Recess | December 24, 2026 - January 1, 2027 | No School |
| District Closed - Dr. Martin Luther King, Jr. Day | January 18, 2027 (Mon) | No School |
| Midwinter Recess | February 15, 2027 - February 19, 2027 | No School |
| District Closed - Eid al-Fitr | March 9, 2027 (Tue) | No School |
| District Closed - Easter Break | March 25, 2027 - March 26, 2027 | No School |
| District Closed - Spring Recess | April 22, 2027 - April 30, 2027 | No School |
| District Closed - Eid al-Adha | May 17, 2027 (Mon) | No School |
| District Closed - Memorial Day | May 31, 2027 (Mon) | No School |
| District Closed - Juneteenth | June 18, 2027 (Fri) | No School |
| Last Day of School | June 25, 2027 (Fri) | School Closes |
View the full 2026-2027 school year by month.
Syosset Central School District is listed here with official 2026-2027 calendar data. The student year starts on Tuesday, September 1, 2026 and ends on Friday, June 25, 2027.
The main multi-day closure blocks are District Closed - Thanksgiving Recess (Thursday, November 26, 2026 through Friday, November 27, 2026), Holiday Recess (Thursday, December 24, 2026 through Friday, January 1, 2027), Mid-Winter Recess (Monday, February 15, 2027 through Friday, February 19, 2027), District Closed - Easter Break (Thursday, March 25, 2027 through Friday, March 26, 2027), District Closed - Spring Recess (Thursday, April 22, 2027 through Friday, April 30, 2027).
Single-day closures and important calendar items include District Closed - Labor Day (Monday, September 7, 2026), District Closed - Yom Kippur (Monday, September 21, 2026), District Closed - Columbus Day / Indigenous Peoples' Day (Monday, October 12, 2026), Superintendent's Conference Day - Schools closed to students (Tuesday, November 3, 2026), District Closed - Veterans' Day (Wednesday, November 11, 2026), Half Day Grades Pre-K - 5 (Elementary only) (Tuesday, November 17, 2026), Half Day Grades Pre-K - 5 (Elementary only) (Thursday, November 19, 2026), Half Day All Students Pre-K - 12 (Wednesday, November 25, 2026), plus additional dated items in the table below.
Data source & handling: Official calendar from Syosset Central School District (syossetschools.org). We manually collect and screen dates from district materials, then organize them into key dates, printable PDF, and calendar sync.
Disclaimer: This site is not affiliated with Syosset Central School District or NYSED. Official calendars can change - always check syossetschools.org before making plans.
Last updated: March 17, 2026