Official Seaford Union Free School District 2026-2027 school calendar with holidays, breaks, PDF, and calendar sync. Seaford Union Free School District School Calendar 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 2026-10-09.
| 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) | No School |
| Veterans Day | November 11, 2026 (Wed) | No School |
| SMS Parent-Teacher Conferences - 12:30-2:30 PM / Half-Day for SMS Students | November 19, 2026 (Thu) | No School |
| SHS Half-Day and Open House | November 24, 2026 (Tue) | No School |
| Half-Day Dismissal for All Students / Staff | November 25, 2026 (Wed) | No School |
| Thanksgiving Recess | November 26, 2026 - November 27, 2026 | No School |
| Harbor / Manor Parent-Teacher Conferences / Half Day for Elementary Students | December 10, 2026 (Thu) | No School |
| Holiday Recess | December 23, 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 |
| Emergency Drill - 15-Minute Early Dismissal | March 24, 2027 (Wed) | No School |
| Easter Recess | March 25, 2027 - March 29, 2027 | No School |
| Spring Recess / Passover | April 22, 2027 - April 30, 2027 | No School |
| Memorial Day Recess | May 28, 2027 - May 31, 2027 | No School |
| SMS Final Exams - Half-Day | June 15, 2027 - June 22, 2027 | No School |
| Juneteenth | June 18, 2027 (Fri) | No School |
| Elementary Half-Day | June 23, 2027 - June 25, 2027 | No School |
| Last Day of School | June 25, 2027 (Fri) | School Closes |
Spot an error? Help us keep this calendar accurate.
| Period | Date(s) | Length |
|---|---|---|
| Thanksgiving Recess Window | Nov 24–29, 2026Districtwide no-school: Nov 24–27, 2026 · Adjacent weekend: Nov 28–29, 2026 | 6 days |
| Holiday Recess Window | Dec 23, 2026–Jan 3, 2027Districtwide no-school: Dec 23, 2026–Jan 1, 2027 · Adjacent weekend: Jan 2–3, 2027 | 12 days |
| Winter Recess Window | Feb 13–21, 2027Districtwide no-school: Feb 15–19, 2027 · Adjacent weekend: Feb 13–14, 2027, Feb 20–21, 2027 | 9 days |
| Easter Recess Window | Mar 24–28, 2027Districtwide no-school: Mar 24–28, 2027 | 5 days |
| Spring Recess / Passover Window | Apr 22–May 2, 2027Districtwide no-school: Apr 22–30, 2027 · Adjacent weekend: May 1–2, 2027 | 11 days |
| Juneteenth Window | Jun 15–25, 2027Districtwide no-school: Jun 15–18, 2027, Jun 21–25, 2027 · Adjacent weekend: Jun 19–20, 2027 | 11 days |
| Event | Date(s) |
|---|---|
| SMS / SHS First Quarter Begins | Sep 1, 2026 |
| SMS / SHS First Quarter Ends | Nov 6, 2026 |
| SMS / SHS Second Quarter Begins | Nov 9, 2026 |
| SMS First Quarter Grades on Portal / SHS First Quarter Grades Posted | Nov 18, 2026 |
| SMS / SHS Second Quarter Ends | Jan 22, 2027 |
| SMS / SHS Third Quarter Begins | Jan 25, 2027 |
| SMS / SHS Second Quarter Grades Posted | Feb 3, 2027 |
| Elementary Trimester 2 Ends / Parent Portal Opens | Mar 17, 2027 |
| SMS / SHS Third Quarter Ends | Mar 24, 2027 |
| SMS / SHS Fourth Quarter Begins | Mar 30, 2027 |
| SMS / SHS Third Quarter Grades Posted | Apr 7, 2027 |
| Class of 2027 Graduation - 6 PM | Jun 11, 2027 |
| SHS Last Day of Classes | Jun 11, 2027 |
| Manor Moving-Up Ceremony - 6 PM | Jun 14, 2027 |
| SMS Last Full Day of Classes | Jun 14, 2027 |
| Harbor Moving-Up Ceremony - 6 PM | Jun 15, 2027 |
| Harbor Kindergarten Moving-Up - 9:30 AM | Jun 23, 2027 |
| SMS Graduation - 6 PM | Jun 23, 2027 |
| SMS / SHS Fourth Quarter Ends | Jun 25, 2027 |
View the full 2026-2027 school year by month.
Seaford Union Free School District operates Seaford Harbor and Seaford Manor elementary schools, followed by Seaford Middle School and Seaford High School. Project Lead the Way starts with elementary design projects. All sixth graders take Computer Science for Innovators and Makers, while seventh graders explore Medical Detectives.
High school choices include Human Body Systems, Computer Science Principles, and Cybersecurity. Human Body Systems uses models and case investigations to study body functions, with an option to earn Rochester Institute of Technology credit. Advanced Placement Seminar and Research develop argument, presentation, and independent research skills. Children needing learning support can receive help through each school's instructional support team. Teams review learning data, recommend instructional changes, monitor progress, and involve parents; this help is available within general education.
Data source & handling: Official calendar from Seaford Union Free School District (seaford.k12.ny.us). 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 Seaford Union Free School District or NYSED. Official calendars can change - always check seaford.k12.ny.us before making plans.
Last updated: 2026-10-09