For the 2026–2027 school year, Oakville School District #400 publishes its official academic calendar for Washington. Classes begin Aug 28 and end Jun 16. All dates listed below are sourced from the district's official publications. Verify with Oakville School District #400 before scheduling around them.
Visual Calendar
Official Calendar Images
Official calendar scans for Oakville School District #400. Click any page to open the full-size image.
School Calendar
Interactive Calendar
Oakville School District #400's 2026–2027 academic calendar — holidays, breaks, and key dates.
Month by Month Calendar
- Conferences - No ClassesAug 26 — Aug 27Event
- First Day of Class Grades 1-12 (No P, TK, K)Aug 28, 2026School Opens
- Soft Start for P, TK, KAug 31, 2026Event
- Soft Start for P, TK, KSep 1, 2026Event
- Late Start 10 AMSep 2, 2026Event
- No School - Labor DaySep 7, 2026No School
- Late Start 10 AMSep 9, 2026Event
- Late Start 10 AMSep 16, 2026Event
- Late Start 10 AMSep 23, 2026Event
- No SchoolSep 25, 2026No School
- Late Start 10 AMSep 30, 2026Event
- Conference Week - Early Release 1:30 PMOct 5 — Oct 9Early Release
- No SchoolOct 12, 2026No School
- Late Start 10 AMOct 14, 2026Event
- Late Start 10 AMOct 21, 2026Event
- Late Start 10 AMOct 28, 2026Event
- End of QuarterOct 29, 2026Grading
- No SchoolOct 30, 2026No School
- Late Start 10 AMNov 4, 2026Event
- No SchoolNov 11, 2026No School
- Late Start 10 AMNov 18, 2026Event
- Early Release 1:30 PMNov 25, 2026Early Release
- No SchoolNov 26 — Nov 27No School
- Late Start 10 AMDec 2, 2026Event
- Late Start 10 AMDec 9, 2026Event
- Late Start 10 AMDec 16, 2026Event
- Early Release 1:30 PMDec 18, 2026Early Release
- No School - Winter BreakDec 21 — Jan 1No School
- No SchoolJan 1, 2027No School
- Late Start 10 AMJan 6, 2027Event
- Late Start 10 AMJan 13, 2027Event
- No SchoolJan 18, 2027No School
- Late Start 10 AMJan 20, 2027Event
- End of SemesterJan 22, 2027Grading
- Late Start 10 AMJan 27, 2027Event
- No School - Staff Inservice DayJan 29, 2027No School
- Late Start 10 AMFeb 3, 2027Event
- Late Start 10 AMFeb 10, 2027Event
- No SchoolFeb 12 — Feb 16No School
- Late Start 10 AMFeb 17, 2027Event
- Late Start 10 AMFeb 24, 2027Event
- Late Start 10 AMMar 3, 2027Event
- Conference Week - Early Release 1:30 PMMar 8 — Mar 12Early Release
- No School - Snow Make Up DayMar 15, 2027No School
- Late Start 10 AMMar 17, 2027Event
- Late Start 10 AMMar 24, 2027Event
- Late Start 10 AMMar 31, 2027Event
- End of QuarterApr 2, 2027Grading
- No School - Spring BreakApr 5 — Apr 9No School
- Late Start 10 AMApr 14, 2027Event
- Late Start 10 AMApr 21, 2027Event
- Late Start 10 AMApr 28, 2027Event
- No School - Snow Make Up DayApr 30, 2027No School
- Late Start 10 AMMay 5, 2027Event
- Late Start 10 AMMay 12, 2027Event
- Late Start 10 AMMay 19, 2027Event
- Late Start 10 AMMay 26, 2027Event
- No School - Snow Make Up DayMay 28, 2027No School
- No SchoolMay 31, 2027No School
- Late Start 10 AMJun 2, 2027Event
- Late Start 10 AMJun 9, 2027Event
- HS GraduationJun 12, 2027Event
- Last Day of School & End of SemesterJun 16, 2027School Closes
- Early Release 1:30 PMJun 16, 2027Early Release
About the District
School Information
Details and contact information for Oakville School District #400 OSD.
Sources and Checks
Where these dates come from
How the 2026–2027 Oakville School District #400 calendar on this page was compiled and what to re-check before you rely on it.
- ✓District publication. Dates are taken from the calendar Oakville School District #400 published for 2026–2027, shown as images on this page.
- ✓Official website. Cross-checked against oakvilleschools.org.
- ✓Board-approved version is used where the district marks one.
- ✓First and last day match the published calendar.
- ✓Breaks and holidays are listed with their full date ranges.
- ✓Teacher / no-school days are included where the district lists them.
- ✓Changes happen. Districts amend calendars mid-year — confirm with Oakville School District #400 before booking around a date.
Common Questions
Frequently Asked Questions
Oakville School District #400 Calendar 2026–2027 — important dates and answers.
The first day of class for students in grades 1-12 is August 28, 2026. Preschool, Transitional Kindergarten, and Kindergarten have a soft start beginning August 31, 2026.
Spring Break is from April 5 through April 9, 2027.
The Christmas and winter holiday break runs from December 21, 2026 through January 1, 2027.
Winter Break is from December 21, 2026 through January 1, 2027.
Students have an early release at 1:30 PM on November 25, 2026, followed by no school on November 26-27, 2026.
The last day of school is June 16, 2027. It is also the end of the semester and an early release day at 1:30 PM.
Fall Conference Week is October 5-9, 2026, with early release at 1:30 PM.
Spring Conference Week is March 8-12, 2027, with early release at 1:30 PM.
There is no school on September 7, 2026 for Labor Day.
There is no school on January 29, 2027 due to a Staff Inservice Day.
The scheduled snow make-up days are March 15, April 30, and May 28, 2027.
The first semester ends on January 22, 2027.
Quarter-end dates include October 29, 2026 and April 2, 2027.
High school graduation is scheduled for June 12, 2027.
There is no school on May 31, 2027.
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