Official Williamsville 2026-2027 school calendar with holidays, breaks, PDF, and calendar sync. Complete school year calendar for Williamsville Central School 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 May 24, 2026.
| Event | Date(s) | Status |
|---|---|---|
| First Day of School | September 8, 2026 (Tue) | School Opens |
| Indigenous Peoples' Day / Italian American Heritage Day | October 12, 2026 (Mon) | No School |
| Veterans Day Observance | November 11, 2026 (Wed) | No School |
| Thanksgiving Recess | November 26, 2026 - November 27, 2026 | No School |
| Winter Recess | December 24, 2026 - January 1, 2027 | No School |
| Martin Luther King Jr. Day | January 18, 2027 (Mon) | No School |
| Midwinter Recess | February 15, 2027 - February 19, 2027 | No School |
| Spring Recess | March 26, 2027 - April 2, 2027 | No School |
| Memorial Day Recess | May 31, 2027 (Mon) | No School |
| Juneteenth | June 18, 2027 (Fri) | No School |
| Last Day of School | June 24, 2027 (Thu) | School Closes |
View the full 2026-2027 school year by month.
Williamsville Central School District is listed here with official 2026-2027 calendar data. The student year starts on Tuesday, September 8, 2026 and ends on Thursday, June 24, 2027.
The main multi-day closure blocks are Thanksgiving Recess (Thursday, November 26, 2026 through Friday, November 27, 2026), Winter Recess (Thursday, December 24, 2026 through Friday, January 1, 2027), Mid-Winter Recess (Monday, February 15, 2027 through Friday, February 19, 2027), Spring Recess (Friday, March 26, 2027 through Friday, April 2, 2027).
Single-day closures and important calendar items include Emergency Drill/Early Dismissal (Friday, October 2, 2026), Indigenous Peoples' Day/Italian American Heritage Day (Monday, October 12, 2026), Veterans Day Observance (Wednesday, November 11, 2026), Martin Luther King, Jr. Day (Monday, January 18, 2027), Memorial Day Recess (Monday, May 31, 2027), Half day for K-4 students, contingent on attendance requirement (Elementary only) (Friday, June 4, 2027), Half day for K-4 students, contingent on attendance requirement (Elementary only) (Friday, June 11, 2027), Juneteenth Observance (Friday, June 18, 2027).
Data source & handling: Official calendar from Williamsville Central School District (williamsvillek12.org). 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 Williamsville Central School District or NYSED. Official calendars can change - always check williamsvillek12.org before making plans.
Last updated: May 24, 2026