For the 2026–2027 school year, the district serves 59 students across 1 schools in Brewster County, Texas. Classes begin Aug 12 and end May 21. All dates listed below are sourced from the district's official publications. Verify with Marathon ISD before scheduling around them.
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Visual Calendar
Official Calendar Images
Official calendar scans for Marathon ISD. Click any page to open the full-size image.
2026–2027
School Calendar
Interactive Calendar
Marathon ISD's 2026–2027 academic calendar — holidays, breaks, and key dates.
2026–2027
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Current status
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🎒
School returns
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🍎
Upcoming teacher / no-school days
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Month by Month Calendar
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weekdays off across the year
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of those are one-off days needing cover
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longest break
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School Day
Holiday / No School
Break
Teacher Day
Early Release
First / Last Day
AUGUST 202612 days
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Staff Development
Aug 3 — Aug 11
First Day of School
Aug 12
Half Day Students / Staff Development
Aug 28
SEPTEMBER 202620 days
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Labor Day Holiday
Sep 7
1st 6-weeks Ends
Sep 18
2nd 6-weeks Begins
Sep 21
Half Day Students / Staff Development
Sep 25
OCTOBER 202616 days
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Fall Break / Teacher Exchange Days
Oct 12 — Oct 16
Teacher Exchange Days (Non-Instructional)
Oct 12 — Oct 13
2nd 6-weeks Ends
Oct 30
Parent/Teacher Conferences & Half Day Students
Oct 30
NOVEMBER 202615 days
SunMonTueWedThuFriSat
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3rd 6-weeks Begins
Nov 2
Half Day Students / Staff Development
Nov 20
Thanksgiving Break
Nov 23 — Nov 27
DECEMBER 202613 days
SunMonTueWedThuFriSat
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STAAR/EOC Testing Window
Dec 8 — Dec 11
3rd 6-weeks Ends
Dec 18
Half Day Students / Staff Development
Dec 18
Christmas Break
Dec 21 — Dec 31
JANUARY 202717 days
SunMonTueWedThuFriSat
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Christmas Break (Continued)
Jan 1 — Jan 4
Staff Development Day
Jan 4
4th 6-weeks Begins / 2nd Semester Starts
Jan 5
Teacher Exchange Day (Non-Instructional)
Jan 18
Half Day Students / Staff Development
Jan 29
FEBRUARY 202714 days
SunMonTueWedThuFriSat
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Winter Break / Teacher Exchange Days
Feb 1 — Feb 5
4th 6-weeks Ends
Feb 12
5th 6-weeks Begins
Feb 15
Half Day Students / Staff Development
Feb 26
MARCH 202716 days
SunMonTueWedThuFriSat
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Spring Break
Mar 8 — Mar 12
Half Day Students / Staff Development
Mar 25
Good Friday
Mar 26
Bad Weather Day
Mar 29
APRIL 202721 days
SunMonTueWedThuFriSat
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5th 6-weeks Ends
Apr 2
6th 6-weeks Begins
Apr 5
STAAR/EOC Testing Windows
Apr 6 — Apr 23
Half Day Students / Staff Development
Apr 30
MAY 202714 days
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STAAR/EOC Testing Window
May 4 — May 14
6th 6-weeks Ends / Last Day of School
May 21
Half Day Students / Staff Development
May 21
Graduation
May 22
Key Dates 2026–2027
- Staff DevelopmentAug 3 — Aug 11Teacher Day
- First Day of SchoolAug 12, 2026School Opens
- Half Day Students / Staff DevelopmentAug 28, 2026Teacher Day
- Labor Day HolidaySep 7, 2026No School
- 1st 6-weeks EndsSep 18, 2026Event
- 2nd 6-weeks BeginsSep 21, 2026Event
- Half Day Students / Staff DevelopmentSep 25, 2026Teacher Day
- Fall Break / Teacher Exchange DaysOct 12 — Oct 16No School
- Teacher Exchange Days (Non-Instructional)Oct 12 — Oct 13Teacher Day
- 2nd 6-weeks EndsOct 30, 2026Event
- Parent/Teacher Conferences & Half Day StudentsOct 30, 2026Teacher Day
- 3rd 6-weeks BeginsNov 2, 2026Event
- Half Day Students / Staff DevelopmentNov 20, 2026Teacher Day
- Thanksgiving BreakNov 23 — Nov 27No School
- STAAR/EOC Testing WindowDec 8 — Dec 11Event
- 3rd 6-weeks EndsDec 18, 2026Event
- Half Day Students / Staff DevelopmentDec 18, 2026Teacher Day
- Christmas BreakDec 21 — Dec 31No School
- Christmas Break (Continued)Jan 1 — Jan 4No School
- Staff Development DayJan 4, 2027Teacher Day
- 4th 6-weeks Begins / 2nd Semester StartsJan 5, 2027Event
- Teacher Exchange Day (Non-Instructional)Jan 18, 2027Teacher Day
- Half Day Students / Staff DevelopmentJan 29, 2027Teacher Day
- Winter Break / Teacher Exchange DaysFeb 1 — Feb 5No School
- 4th 6-weeks EndsFeb 12, 2027Event
- 5th 6-weeks BeginsFeb 15, 2027Event
- Half Day Students / Staff DevelopmentFeb 26, 2027Teacher Day
- Spring BreakMar 8 — Mar 12No School
- Half Day Students / Staff DevelopmentMar 25, 2027Teacher Day
- Good FridayMar 26, 2027No School
- Bad Weather DayMar 29, 2027Event
- 5th 6-weeks EndsApr 2, 2027Event
- 6th 6-weeks BeginsApr 5, 2027Event
- STAAR/EOC Testing WindowsApr 6 — Apr 23Event
- Half Day Students / Staff DevelopmentApr 30, 2027Teacher Day
- STAAR/EOC Testing WindowMay 4 — May 14Event
- 6th 6-weeks Ends / Last Day of SchoolMay 21, 2027School Closes
- Half Day Students / Staff DevelopmentMay 21, 2027Teacher Day
- GraduationMay 22, 2027Event
Generated by CalendarStates.com · Always verify dates with your school district.
About the District
School Information
Details and contact information for Marathon ISD.
Marathon ISD
AddressP O BOX 416, Marathon, TX, 79842-0416
Phone(432) 386-4431
Websitemarathonisd.net
SuperintendentDr Ivonne Durant
Academic Facts
Students~59
Schools1+
Grade Range—
Instr. Days—
RegionBrewster County
Sources and Checks
Where these dates come from
How the 2026–2027 Marathon ISD calendar on this page was compiled and what to re-check before you rely on it.
Sources used
- ✓District publication. Dates are taken from the calendar Marathon ISD published for 2026–2027, shown as images on this page.
- ✓Official website. Cross-checked against marathonisd.net.
- ✓Board-approved version is used where the district marks one.
What we check
- ✓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 Marathon ISD before booking around a date.
Common Questions
Frequently Asked Questions
Marathon ISD Calendar 2026–2027 — important dates and answers.
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Recently Updated Calendars
Other Texas school district calendars — recently added or updated.