For the 2025–2026 school year, Isc ISD publishes its official academic calendar for Texas. Classes begin Aug 11 and end May 15. All dates listed below are sourced from the district's official publications. Verify with Isc ISD before scheduling around them.
Visual Calendar
Official Calendar Images
Official calendar scans for Isc ISD. Click any page to open the full-size image.
School Calendar
Interactive Calendar
Isc ISD's 2026–2027 academic calendar — holidays, breaks, and key dates.
Month by Month Calendar
- Teacher WorkdaysAug 4 — Aug 7Teacher Day
- Staff DevelopmentAug 8 — Aug 9Teacher Day
- First Day of SchoolAug 11, 2025School Opens
- District ClosedSep 1 — Sep 2Event
- Exchange/Comp DaySep 15, 2025Teacher Day
- Second Six Weeks BeginsSep 22, 2025Event
- District ClosedOct 3 — Oct 4Event
- Teacher WorkdayOct 27, 2025Teacher Day
- Exchange/Comp DayOct 31, 2025Teacher Day
- Third Six Weeks BeginsNov 3, 2025Event
- District Closed (Thanksgiving Break)Nov 24 — Nov 28No School
- Exchange/Comp DayDec 19, 2025Teacher Day
- District Closed (Winter Break)Dec 22 — Dec 31No School
- District Closed (Winter Break)Jan 1 — Jan 2No School
- Teacher WorkdayJan 5, 2026Teacher Day
- Exchange/Comp DayJan 6, 2026Teacher Day
- Staff DevelopmentJan 9, 2026Teacher Day
- District ClosedJan 19, 2026Event
- Teacher WorkdayFeb 9, 2026Teacher Day
- Exchange/Comp DayFeb 13, 2026Teacher Day
- Fifth Six Weeks BeginsFeb 16, 2026Event
- District Closed (Spring Break)Mar 9 — Mar 13No School
- Teacher WorkdayMar 23, 2026Teacher Day
- Exchange/Comp DayApr 2, 2026Teacher Day
- District ClosedApr 3, 2026Event
- District ClosedApr 6, 2026Event
- Sixth Six Weeks BeginsApr 7, 2026Event
- Last Day of SchoolMay 15, 2026School Closes
- GraduationMay 15, 2026Event
- Exchange/Comp DaysMay 18 — May 22Teacher Day
- District ClosedMay 25, 2026Event
- Exchange/Comp DaysMay 26 — May 28Teacher Day
- District ClosedMay 29, 2026Event
- District ClosedJun 5, 2026Event
- District ClosedJun 26, 2026Event
About the District
School Information
Details and contact information for Isc ISD.
Sources and Checks
Where these dates come from
How the 2025–2026 Isc ISD calendar on this page was compiled and what to re-check before you rely on it.
- ✓District publication. Dates are taken from the calendar Isc ISD published for 2025–2026, shown as images on this page.
- ✓Official website. Cross-checked against the district office.
- ✓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 Isc ISD before booking around a date.
Common Questions
Frequently Asked Questions
Isc ISD Calendar 2025–2026 — important dates and answers.
The first day of school in ISC ISD is August 11, 2025.
Spring Break in ISC ISD is from March 9 through March 13, 2026.
Christmas Break in ISC ISD begins on December 22, 2025, and continues through January 2, 2026.
Winter Break in ISC ISD is from December 22, 2025, through January 2, 2026.
Thanksgiving Break in ISC ISD is from November 24 through November 28, 2025.
The last day of school in ISC ISD is May 15, 2026.
ISC ISD graduation is scheduled for May 15, 2026.
The first teacher workdays are scheduled from August 4 through August 7, 2025.
Staff development days are scheduled for August 8 and August 9, 2025.
ISC ISD is closed on September 1 and September 2, 2025.
The October teacher workday is scheduled for October 27, 2025.
The January teacher workday is scheduled for January 5, 2026.
The February teacher workday is scheduled for February 9, 2026.
The March teacher workday is scheduled for March 23, 2026.
The second six weeks begins on September 22, 2025.
The third six weeks begins on November 3, 2025.
The fifth six weeks begins on February 16, 2026.
The sixth six weeks begins on April 7, 2026.
ISC ISD is closed on April 3 and April 6, 2026.
The ISC ISD 2025-2026 calendar includes 168 student days.
Explore More
Recently Updated Calendars
Other Texas school district calendars — recently added or updated.