Complete school year calendar for Sewanhaka Central High School District. 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 May 30, 2026.
| Event | Date(s) | Status |
|---|---|---|
| First Day of School | September 2, 2026 (Wed) | 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 |
| Veterans Day Observance | November 11, 2026 (Wed) | No School |
| Thanksgiving Recess | November 26, 2026 - November 27, 2026 | No School |
| Holiday Recess | December 24, 2026 - January 1, 2027 | No School |
| Martin Luther King Jr. Day | January 18, 2027 (Mon) | No School |
| Winter Recess | February 15, 2027 - February 19, 2027 | No School |
| Eid al-Fitr | March 9, 2027 (Tue) | No School |
| Spring Recess One | March 25, 2027 - March 26, 2027 | No School |
| Spring Recess Two | 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 |
View the full 2026-2027 school year by month.
District context: Sewanhaka Central High School District serves Long Island families, so its calendar may differ from nearby districts even when state holidays align. For 2026-2027, students are scheduled to start on September 2, 2026 and finish on June 25, 2027. The main family planning blocks are Thanksgiving Recess (November 26, 2026 - November 27, 2026), Holiday Recess (December 24, 2026 - January 1, 2027), Winter Recess (February 15, 2027 - February 19, 2027), and Spring Recess One (March 25, 2027 - March 26, 2027).
What to watch: Staff-only, conference, or Rating Day notes include Parent-Teacher Conferences Day (November 3, 2026). If snow days or emergency closings later change the calendar, compare this page with the district source before making travel, attendance, or childcare plans.
Official-source handling: Official calendar from Sewanhaka Central High School District (https://www.sewanhakaschools.org). We manually collect and screen dates from district materials, then organize them into key dates, calendar grids, printable PDF, and calendar sync. Because this page is treated as official, families can use it as the main planning view while still checking the district source for late revisions. This site is not affiliated with Sewanhaka Central High School District or NYSED.
Data source & handling: Official calendar from Sewanhaka Central High School District (sewanhakaschools.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 Sewanhaka Central High School District or NYSED. Official calendars can change - always check sewanhakaschools.org before making plans.
Last updated: May 30, 2026