Visual Calendar
Official Calendar Images
Official calendar scans for KNOX CITY-O'BRIEN CISD. Click any image to open full-screen.
School Calendar
Download PDF Calendar
Download KNOX CITY-O'BRIEN CISD's 2026–2027 academic calendar PDF — holidays, breaks, and key dates.
Interactive Calendar
- Comp DayAug 1, 2025Teacher Day
- Staff DevelopmentAug 4 — Aug 7Teacher Day
- Comp DayAug 8, 2025Teacher Day
- Staff DevelopmentAug 11 — Aug 12Teacher Day
- First Day of SchoolAug 13, 2025School Opens
- Labor Day HolidaySep 1, 2025No School
- End of First Six WeeksSep 26, 2025Grading
- Staff DevelopmentSep 29, 2025Teacher Day
- Beginning of Second Six WeeksSep 30, 2025Event
- School HolidayOct 13, 2025No School
- End of Second Six WeeksOct 31, 2025Grading
- Staff DevelopmentNov 3, 2025Teacher Day
- Beginning of Third Six WeeksNov 4, 2025Event
- Student Early DismissalNov 21, 2025Event
- Thanksgiving BreakNov 24 — Nov 28No School
- Student Early Dismissal and End of First SemesterDec 17, 2025Grading
- Christmas and Winter BreakDec 18 — Jan 2No School
- Staff DevelopmentJan 5, 2026Teacher Day
- Martin Luther King Jr. Day HolidayJan 19, 2026No School
- End of Fourth Six WeeksFeb 13, 2026Grading
- Comp DayFeb 16, 2026Teacher Day
- Beginning of Fifth Six WeeksFeb 17, 2026Event
- Student Early DismissalMar 13, 2026Event
- Spring BreakMar 16 — Mar 20No School
- End of Fifth Six WeeksApr 2, 2026Grading
- School HolidayApr 3, 2026No School
- School HolidayApr 6, 2026No School
- Beginning of Sixth Six WeeksApr 7, 2026Event
- Bad Weather DayApr 24, 2026Event
- Bad Weather DayMay 8, 2026Event
- Student Early Dismissal, Last Day of School and End of Second SemesterMay 14, 2026School Closes
- Staff DevelopmentMay 15, 2026Teacher Day
For the 2025–2026 school year, KNOX CITY-O'BRIEN CISD publishes its official academic calendar for Texas. Classes begin Aug 13 and end May 14. All dates listed below are sourced from the district's official publications. Verify with KNOX CITY-O'BRIEN CISD before scheduling around them.
About the District
School Information
Details and contact information for KNOX CITY-O'BRIEN CISD.
Common Questions
Frequently Asked Questions
KNOX CITY-O'BRIEN CISD Calendar 2025–2026 — important dates and answers.
The first day of school in Knox City-O'Brien CISD is August 13, 2025.
Spring Break in Knox City-O'Brien CISD is from March 16 through March 20, 2026.
Christmas Break in Knox City-O'Brien CISD begins on December 18, 2025, and continues through January 2, 2026.
Winter Break in Knox City-O'Brien CISD is from December 18, 2025, through January 2, 2026.
Thanksgiving Break in Knox City-O'Brien CISD is from November 24 through November 28, 2025.
The last day of school in Knox City-O'Brien CISD is May 14, 2026. Students will have an early dismissal that day.
Knox City-O'Brien CISD will be closed for Labor Day on September 1, 2025.
The October school holiday in Knox City-O'Brien CISD is October 13, 2025.
Knox City-O'Brien CISD will be closed for Martin Luther King Jr. Day on January 19, 2026.
Staff development days are August 4-7, August 11-12, September 29, and November 3, 2025, as well as January 5 and May 15, 2026.
Student early dismissal days are November 21 and December 17, 2025, and March 13 and May 14, 2026.
The designated bad weather days are April 24 and May 8, 2026.
The first semester ends on December 17, 2025.
Students return after Winter Break on January 6, 2026.
The comp days are August 1 and August 8, 2025, and February 16, 2026.
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