For the 2026–2027 school year, the district serves 3,500 students across 6 schools in Texas. Classes begin August 13, 2026 and end May 26, 2027, with 180 instructional days planned. All dates listed below are sourced from the district's official publications. Verify with Sinton ISD before scheduling around them.
Visual Calendar
Official Calendar Images
Official calendar scans for Sinton ISD. Click any page to open the full-size image.
School Calendar
Interactive Calendar
Sinton 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 Sinton ISD.
Who This Calendar Applies To
Schools Covered by This Calendar
The 2026–2027 Sinton ISD academic calendar applies district-wide to all 5 campuses.
Elementary Schools2
- Sinton Elementary School (03–05)
- Welder Elementary School (EE–02)
Middle & Junior High Schools1
- E Merle Smith Middle School (06–08)
High Schools1
- Sinton High School (09–12)
Alternative & Specialized Campuses1
- Juvenile Detention Center (04–12)
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 Sinton 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 Sinton ISD published for 2026–2027, shown as images on this page.
- ✓Official website. Cross-checked against sintonisd.net.
- ✓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 Sinton ISD before booking around a date.
Common Questions
Frequently Asked Questions
Sinton ISD Calendar 2026–2027 — important dates and answers.
The first day of school for students in Sinton ISD is Thursday, August 13, 2026.
Spring Break in Sinton ISD is scheduled from March 8 through March 12, 2027. Students also have school holidays on March 26 and March 29, 2027.
Christmas Break begins on December 21, 2026 and continues through January 4, 2027. Classes resume after the teacher work day on January 5, 2027.
Winter Break runs from December 21, 2026, through January 4, 2027, including the Christmas and New Year holidays.
Thanksgiving Break is scheduled from November 23 through November 27, 2026.
The last instructional day for students in Sinton ISD is Wednesday, May 26, 2027.
Sinton ISD observes Labor Day on September 7, 2026, and there are no classes.
Memorial Day is observed on May 31, 2027.
Teacher Work Days are scheduled on August 10, September 25, October 16, November 20, December 18, January 5, May 27, and May 28, 2027.
Parent-Teacher Conferences are scheduled for October 19, 2026 and February 15, 2027.
STAAR/EOC testing is scheduled for April 6-7, April 13-15, and April 20-21, 2027.
Graduation for Sinton ISD is scheduled for May 28, 2027.
Summer School is scheduled from June 1 through June 17, 2027.
New Employee Orientation is scheduled from August 3 through August 7, 2026.
Development & Planning days are scheduled on August 12, October 9, October 13, January 5, and March 5 & 16, 2027.
Explore More
Recently Updated Calendars
Other Texas school district calendars — recently added or updated.