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 |
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| Period | Date(s) | Length |
|---|---|---|
| Thanksgiving Recess Window | Nov 26–29, 2026Districtwide no-school: Nov 26–27, 2026 · Adjacent weekend: Nov 28–29, 2026 | 4 days |
| Winter Recess Window | Dec 24, 2026–Jan 3, 2027Districtwide no-school: Dec 24, 2026–Jan 1, 2027 · Adjacent weekend: Jan 2–3, 2027 | 11 days |
| Midwinter Recess Window | Feb 13–21, 2027Districtwide no-school: Feb 15–19, 2027 · Adjacent weekend: Feb 13–14, 2027, Feb 20–21, 2027 | 9 days |
| Spring Recess Window | Mar 26–Apr 4, 2027Districtwide no-school: Mar 26–Apr 2, 2027 · Adjacent weekend: Apr 3–4, 2027 | 10 days |
| Event | Date(s) |
|---|---|
| First Student Day / First Semester Begins | Sep 8, 2026 |
| Yom Kippur | Sep 21, 2026 |
| Emergency Drill / Early Dismissal | Oct 2, 2026 |
| Regents Examination Period | Jan 26–29, 2027 |
| Eid al-Fitr | Mar 10, 2027 |
| Eid al-Adha | May 17, 2027 |
| Regents Exams | Jun 15–17, 2027 |
| Regents Exams | Jun 21–24, 2027 |
| Rating Day / Last Teacher Day | Jun 25, 2027 |
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 Yom Kippur/Superintendent Conference Day (Monday, September 21, 2026), 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), Eid al-Fitr/Superintendent Conference Day (Wednesday, March 10, 2027), Eid al-Adha/Superintendent Conference Day (Monday, May 17, 2027), Memorial Day Recess (Monday, May 31, 2027), plus additional dated items in the table below.
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