Official Central Islip Union Free School District 2026-2027 school calendar with holidays, breaks, PDF, and calendar sync. Six elementary schools feed Ralph G. Reed Middle School and Central Islip High School, with bilingual, research, and technical programs available across the 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 2026-09-09.
| Event | Date(s) | Status |
|---|---|---|
| First Day of School | September 1, 2026 (Tue) | School Opens |
| Labor Day - All | September 7, 2026 (Mon) | No School |
| Yom Kippur - All | September 21, 2026 (Mon) | No School |
| Columbus Day / Indigenous Peoples' Day - All | October 12, 2026 (Mon) | No School |
| Student Holiday | November 3, 2026 (Tue) | No School |
| Veterans Day - All | November 11, 2026 (Wed) | No School |
| Thanksgiving Recess - All | November 25, 2026 - November 27, 2026 | No School |
| Winter Recess - All | December 21, 2026 - December 25, 2026 | No School |
| Winter Recess - All | December 28, 2026 - December 31, 2026 | No School |
| New Year's Day | January 1, 2027 (Fri) | No School |
| Dr. Martin Luther King Jr. Day - All | January 18, 2027 (Mon) | No School |
| Mid-Winter Recess - All | February 15, 2027 - February 19, 2027 | No School |
| Easter Recess - All | March 25, 2027 - March 26, 2027 | No School |
| Easter Recess - All | March 29, 2027 (Mon) | No School |
| Spring Recess - All | April 19, 2027 - April 23, 2027 | No School |
| Memorial Day Weekend | May 28, 2027 (Fri) | No School |
| Memorial Day | May 31, 2027 (Mon) | 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 - All Window | Nov 25–29, 2026Districtwide no-school: Nov 25–27, 2026 · Adjacent weekend: Nov 28–29, 2026 | 5 days |
| Winter Recess - All Window | Dec 19, 2026–Jan 3, 2027Districtwide no-school: Dec 21–25, 2026, Dec 28, 2026–Jan 1, 2027 · Adjacent weekend: Dec 19–20, 2026, Dec 26–27, 2026, Jan 2–3, 2027 | 16 days |
| Mid-Winter Recess - All 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 - All Window | Mar 25–29, 2027Districtwide no-school: Mar 25–26, 2027, Mar 29, 2027 · Adjacent weekend: Mar 27–28, 2027 | 5 days |
| Spring Recess - All Window | Apr 17–25, 2027Districtwide no-school: Apr 19–23, 2027 · Adjacent weekend: Apr 17–18, 2027, Apr 24–25, 2027 | 9 days |
| Memorial Day Weekend Window | May 28–31, 2027Districtwide no-school: May 28, 2027, May 31, 2027 · Adjacent weekend: May 29–30, 2027 | 4 days |
| Event | Date(s) |
|---|---|
| Progress Report 1 begins | Sep 1, 2026 |
| Quarter 1 begins | Sep 1, 2026 |
| Semester 1 begins | Sep 1, 2026 |
| Trimester 1 begins | Sep 1, 2026 |
| Progress Report 1 ends | Oct 9, 2026 |
| High School Only Half Day / Parent-Teacher Conferences | Oct 16, 2026 |
| Reed School Evening Parent-Teacher Conferences | Nov 5, 2026 |
| High School Parent-Teacher Evening Conferences | Nov 12, 2026 |
| Quarter 1 ends | Nov 13, 2026 |
| Progress Report 2 begins | Nov 16, 2026 |
| Quarter 2 begins | Nov 16, 2026 |
| Trimester 1 ends | Dec 11, 2026 |
| Trimester 2 begins | Dec 14, 2026 |
| Progress Report 2 ends | Dec 18, 2026 |
| Quarter 2 ends | Jan 22, 2027 |
| Semester 1 ends | Jan 22, 2027 |
| Event | Date(s) |
|---|---|
| Progress Report 3 begins | Jan 25, 2027 |
| Quarter 3 begins | Jan 25, 2027 |
| Semester 2 begins | Jan 25, 2027 |
| Progress Report 3 ends | Feb 26, 2027 |
| Trimester 2 ends | Mar 5, 2027 |
| Trimester 3 begins | Mar 8, 2027 |
| Early Dismissal Parent-Teacher Conferences | Mar 19, 2027 |
| Quarter 3 ends | Apr 9, 2027 |
| Quarter 4 begins | Apr 12, 2027 |
| Quarter 4 ends | Jun 25, 2027 |
| Reed & CIHS Graduation | Jun 25, 2027 |
| Semester 2 ends | Jun 25, 2027 |
| Trimester 3 ends | Jun 25, 2027 |
View the full 2026-2027 school year by month.
The school year begins September 1, 2026 and ends June 25, 2027.
Central Islip’s six elementary schools educate children through sixth grade. Students then attend Ralph G. Reed Middle School for grades 7–8 and Central Islip High School for grades 9–12, with the district’s elementary communities joining at Reed. Anthony Alfano Elementary also serves prekindergarten children.
At the high school, support for English learners extends into required academic subjects. The bilingual and English as a New Language course offerings include sheltered global studies, U.S. history, government, and economics, combining subject instruction with language development.
Students interested in independent investigation can begin with Science Research Foundations, which teaches experimental design, measurement, data analysis, and research reporting. Engineering, software application and design, web design, and woodworking courses provide other ways to explore technical interests within the high school curriculum.
Data source & handling: Official calendar from Central Islip Union Free School District (centralislip.k12.ny.us/about/calendars). 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 Central Islip Union Free School District or NYSED. Official calendars can change - always check centralislip.k12.ny.us/about/calendars before making plans.
Last updated: 2026-09-09