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 |
| Labor Day | September 7, 2026 (Mon) | No School |
| Yom Kippur | September 21, 2026 (Mon) | No School |
| Columbus Day | October 12, 2026 (Mon) | No School |
| No-Student Day | November 3, 2026 (Tue) | No Students |
| Veterans Day | November 11, 2026 (Wed) | No School |
| Thanksgiving Recess | November 25, 2026 - November 27, 2026 | No School |
| Winter Recess | December 24, 2026 - January 1, 2027 | No School |
| Martin Luther King Jr. Day | January 18, 2027 (Mon) | No School |
| Presidents' Week | February 15, 2027 - February 19, 2027 | No School |
| Eid al-Fitr | March 9, 2027 (Tue) | No School |
| Easter Break | March 25, 2027 - March 26, 2027 | No School |
| Spring Recess | April 22, 2027 - April 30, 2027 | No School |
| Eid al-Adha | May 17, 2027 (Mon) | No School |
| Memorial Day | May 31, 2027 (Mon) | No School |
| Juneteenth | June 18, 2027 (Fri) | No School |
| Last Day of School | June 25, 2027 (Fri) | School Closes |
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| Period | Date(s) | Length |
|---|---|---|
| Thanksgiving Recess Window | Nov 25–29, 2026Districtwide no-school: Nov 25–27, 2026 · Adjacent weekend: Nov 28–29, 2026 | 5 days |
| Winter Recess Window | Dec 24, 2026–Jan 3, 2027Districtwide no-school: Dec 24, 2026–Jan 1, 2027 · Adjacent weekend: Jan 2–3, 2027 | 11 days |
| Presidents' Week Window | Feb 13–21, 2027Districtwide no-school: Feb 15–19, 2027 · Adjacent weekend: Feb 13–14, 2027, Feb 20–21, 2027 | 9 days |
| Easter Break Window | Mar 25–28, 2027Districtwide no-school: Mar 25–26, 2027 · Adjacent weekend: Mar 27–28, 2027 | 4 days |
| Spring Recess Window | Apr 22–May 2, 2027Districtwide no-school: Apr 22–30, 2027 · Adjacent weekend: May 1–2, 2027 | 11 days |
| Event | Date(s) |
|---|---|
| Rosh Hashanah (weekend observance; no additional school closure) | Sep 12–13, 2026 |
| Diwali (weekend observance; no additional school closure) | Nov 8, 2026 |
| Lunar New Year (weekend observance; no additional school closure) | Feb 6, 2027 |
| Snow Makeup Day | May 28, 2027 |
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 Thanksgiving Recess (Wednesday, November 25, 2026 through Friday, November 27, 2026), Winter Recess (Thursday, December 24, 2026 through Friday, January 1, 2027), Presidents' Week (Monday, February 15, 2027 through Friday, February 19, 2027), Easter Break (Thursday, March 25, 2027 through Friday, March 26, 2027), Spring Recess (Thursday, April 22, 2027 through Friday, April 30, 2027).
Single-day closures and important calendar items include Labor Day (Monday, September 7, 2026), Yom Kippur (Monday, September 21, 2026), Columbus Day (Monday, October 12, 2026), Superintendent's Conference Day (Tuesday, November 3, 2026), Diwali (Sunday, November 8, 2026), Veterans' Day (Wednesday, November 11, 2026), Dr. Martin Luther King, Jr. Day (Monday, January 18, 2027), Lunar New Year (Saturday, February 6, 2027), 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