Complete school year calendar for Williamsville Central School District. Includes all holidays, breaks, half days, and important dates from September 2026 through June 2027.
| Event | Date(s) | Status |
|---|---|---|
| First Day of School | September 9, 2026 (Wed) | School Opens |
| Rosh Hashanah | September 12, 2026 (Sat) — observed Sep 14 (Mon) | No School |
| Yom Kippur | September 21, 2026 (Mon) | No School |
| Columbus Day / Indigenous Peoples' Day | October 12, 2026 (Mon) | No School |
| Veterans Day | November 11, 2026 (Wed) | No School |
| Thanksgiving Recess | November 25–27, 2026 (Wed–Fri) | No School |
| Winter Recess | Dec 23, 2026 – Jan 1, 2027 | No School |
| MLK Day | January 18, 2027 (Mon) | No School |
| Mid-Winter Recess | February 15–19, 2027 (Mon–Fri) | No School |
| Spring Recess | March 29 – April 2, 2027 (Mon–Fri) | No School |
| Memorial Day | May 31, 2027 (Mon) | No School |
| Juneteenth (observed) | June 18, 2027 (Fri) | No School |
| Last Day of School | June 24, 2027 (Thu) | 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 Williamsville Central School District is a high-performing suburban district in Erie County, serving the communities of Amherst and Cheektowaga. With approximately 10,000 students across 13 schools, Williamsville is the largest suburban district in the Buffalo metro area. The district is home to nationally recognized programs in STEM, performing arts, and athletics. Compare with Buffalo and Rochester calendars.
Williamsville typically starts school the day after Labor Day and follows WNY traditions for break scheduling. The district observes both Rosh Hashanah and Yom Kippur, distinguishing it from many other upstate districts.
The 2026-2027 school year is projected to begin on Wednesday, September 9, 2026, the Wednesday after Labor Day.
Winter Recess is projected for December 23, 2026 through January 1, 2027.
Yes. Williamsville traditionally observes Rosh Hashanah and Yom Kippur as school holidays, reflecting the district's inclusive calendar practices.
Spring Recess is projected for March 29 – April 2, 2027, aligned with Good Friday and Easter week.
The last day is projected to be Thursday, June 24, 2027.
Williamsville, located in the Buffalo snow belt, builds contingency days into the calendar. The district may use remote learning during extended closures to preserve the end-of-year schedule.
Williamsville is consistently ranked among the top districts in Western New York for academic achievement. The district operates 9 elementary schools, 2 middle schools, and 3 high schools (North, South, and East), each with distinct programs and specialties.
Data Source: This calendar is based on projected dates derived from historical Williamsville Central School District scheduling patterns.
Disclaimer: This website is not affiliated with, endorsed by, or connected to Williamsville Central School District or the New York State Education Department (NYSED). For the most current and official calendar, please visit www.williamsvillek12.org.
Dates are subject to change. Religious holiday dates are approximate and based on projected lunar calendar calculations.
Last updated: March 12, 2026