Complete school year calendar for Commack UFSD — one of Suffolk County's largest and highest-performing school districts on Long Island. Includes all holidays, breaks, half days, and important dates from September 2025 through June 2026.
| Event | Date(s) | Status |
|---|---|---|
| First Day of School | September 2, 2025 (Tue) | School Opens |
| Labor Day | September 1, 2025 (Mon) | No School |
| Rosh Hashanah | September 23–24, 2025 (Tue–Wed) | No School |
| Yom Kippur | October 2, 2025 (Thu) | No School |
| Columbus Day | October 13, 2025 (Mon) | No School |
| Veterans Day | November 11, 2025 (Tue) | No School |
| Thanksgiving Recess | November 26–28, 2025 (Wed–Fri) | No School |
| Winter Recess | Dec 24, 2025 – Jan 2, 2026 | No School |
| Martin Luther King Jr. Day | January 19, 2026 (Mon) | No School |
| Mid-Winter Recess | February 16–20, 2026 (Mon–Fri) | No School |
| Eid al-Fitr | March 20, 2026 (Fri) | No School |
| Spring Recess | April 2–10, 2026 | No School |
| Memorial Day | May 25, 2026 (Mon) | No School |
| Eid al-Adha | May 27, 2026 (Wed) | No School |
| Juneteenth | June 19, 2026 (Fri) | No School |
| Last Day of School | June 26, 2026 (Fri) | School Closes |
Complete month-by-month calendar from September 2025 to June 2026. Every day is color-coded so you can see school days, holidays, and breaks at a glance.
The Commack Union Free School District 2025-2026 school year runs from September 4, 2025 to June 26, 2026. Commack serves approximately 6,500 students across 9 schools in western Suffolk County.
Commack High School is one of the largest single high schools on Long Island, known for strong academics, a comprehensive athletics program, and an active extracurricular scene. The district features a dual-middle-school structure and is located in one of Suffolk County's most established suburban communities.
The first day for Commack UFSD is Tuesday, September 2, 2025.
Holiday Recess runs from December 24, 2025 – January 2, 2026.
Spring Recess runs from April 6–10, 2026.
The last day is Friday, June 26, 2026.
Mid-Winter Recess runs February 16–20, 2026.
Not currently. While Commack has a growing South Asian community, Diwali is not yet an official day off. However, the district has been increasingly recognizing cultural diversity in school programming.
Commack UFSD serves approximately 6,500 students across 9 schools in Suffolk County. The district is bordered by Smithtown, Huntington, and Kings Park, and features two middle schools feeding into Commack High School — one of the largest single high schools on Long Island.
Data Source: This calendar is based on projected dates derived from historical Commack Union Free School District scheduling patterns.
Disclaimer: This website is not affiliated with, endorsed by, or connected to Commack Union Free School District or the New York State Education Department (NYSED). For the most current and official calendar, please visit www.commack.k12.ny.us.
Dates are subject to change. Religious holiday dates are approximate and based on projected lunar calendar calculations.
Last updated: March 11, 2026