Complete school year calendar for Cold Spring Harbor CSD — a top-ranked Long Island district named after its historic whaling village on the North Shore. Includes all holidays, breaks, half days, and important dates from September 2026 through June 2027.
| Event | Date(s) | Status |
|---|---|---|
| First Day of School | September 1, 2026 (Tue) | School Opens |
| Labor Day Weekend | September 4 & 7, 2026 (Fri & 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) | Supt. Conf. Day |
| Veterans Day | November 11, 2026 (Wed) | No School |
| Thanksgiving Recess | November 25–27, 2026 (Wed–Fri) | No School |
| Winter Recess | Dec 24, 2026 – Jan 1, 2027 | No School |
| Rev. Dr. Martin Luther King Jr. Day | January 18, 2027 (Mon) | No School |
| Mid-Winter Recess | February 15–19, 2027 (Mon–Fri) | No School |
| Spring Recess I | March 25–29, 2027 (Thu–Mon) | No School |
| Spring Recess II | April 19–23, 2027 (Mon–Fri) | No School |
| Memorial Day Weekend | May 28 & 31, 2027 (Fri & Mon) | No School |
| Juneteenth (Observed) | June 18, 2027 (Fri) | No School |
| Last Day of School | June 25, 2027 (Fri) | School Closes |
Complete month-by-month calendar from September 2026 to June 2027. Every day is color-coded so you can see school days, holidays, and breaks at a glance.
The Cold Spring Harbor Central School District shapes the 2026-2027 academic flow for roughly 1,800 students in an elite, heavily forested North Shore coastal community. It boasts virtually unparalleled graduation and elite college attendance rates.
Because the district is physically nestled along steep, winding coastal roads, its calendar is remarkably sensitive to winter weather. Icy conditions frequently force delays, meaning the calendar's clearly defined snow-day makeup protocols are heavily utilized by working parents. Additionally, the remarkably rigorous academic pacing at the junior/senior high school means parents use this calendar daily to track AP, Regents, and vital research symposium dates.
For easy reference, use the button at the top of this page to download a free, color-coded printable Cold Spring Harbor school calendar for your fridge or desk.
Data Source: Official Cold Spring Harbor Central School District calendar publication.
Disclaimer: This website is not affiliated with, endorsed by, or connected to Cold Spring Harbor Central School District or the New York State Education Department (NYSED). For the most current and official calendar, please visit www.csh.k12.ny.us.
Official calendars can still change. Always confirm updates with the district before making plans.
Last updated: March 17, 2026