The 2026–2027 academic calendar covers all key dates in Texas. Classes begin August 17, 2026 and end May 21, 2027, with 180 instructional days planned. All dates listed below are sourced from the district's official publications. Verify with South Texas ISD before scheduling around them.
Visual Calendar
Official Calendar Images
Official calendar scans for South Texas ISD. Click any page to open the full-size image.
School Calendar
Interactive Calendar
South Texas ISD's 2026–2027 academic calendar — holidays, breaks, and key dates.
Month by Month Calendar
About the District
School Information
Details and contact information for South Texas ISD.
Who This Calendar Applies To
Schools Covered by This Calendar
The 2026–2027 South Texas ISD academic calendar applies district-wide to all 9 campuses.
Middle & Junior High Schools2
- South Texas ISD Preparatory Academy (06–08)
- South Texas ISD Rising Scholars Academy (06–08)
High Schools4
- South Texas ISD Health Professions (09–12)
- South Texas ISD Medical Professions (09–12)
- South Texas ISD Science Academy (09–12)
- South Texas ISD World Scholars (09–12)
Combined & Specialized Campuses3
- Cameron Co JJAEP (06–12)
- Hidalgo Co JJAEP (06–12)
- South Texas ISD Virtual Academy (06–12)
Campus list from the Texas Education Agency school directory. Individual campuses set their own bell schedules, and schools on an alternative or extended-year calendar may adjust specific dates — confirm with the school before planning around a date.
Sources and Checks
Where these dates come from
How the 2026–2027 South Texas 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 South Texas ISD published for 2026–2027, 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 South Texas ISD before booking around a date.
Common Questions
Frequently Asked Questions
South Texas ISD Calendar 2026–2027 — important dates and answers.
The first day of instruction for South Texas ISD in the 2026-2027 school calendar year is August 17, 2026.
Spring Break in South Texas ISD for the 2026-2027 academic calendar is scheduled from March 15 through March 19, 2027.
Christmas Break for South Texas ISD during the 2026-2027 school year begins on December 21, 2026 and continues until January 8, 2027.
The Winter Break in South Texas ISD for the 2026-2027 school calendar runs from December 21, 2026 through January 8, 2027.
Thanksgiving Break in South Texas ISD for the 2026-2027 school calendar takes place from November 23 through November 27, 2026.
The last day of instruction for South Texas ISD in the 2026-2027 academic year is May 21, 2027.
Yes. South Texas ISD observes Columbus Day on October 12, 2026 as a district holiday.
Yes. A Weather Day is scheduled on February 15, 2027 in the South Texas ISD 2026-2027 academic calendar.
Yes. Good Friday will be observed on March 26, 2027 in the South Texas ISD 2026-2027 calendar.
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Other Texas school district calendars — recently added or updated.