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Sinton ISD Calendar 2026-2027

San Patricio County · Corpus Christi area (Region 2)

First day of school: Thursday, August 13, 2026

The Sinton ISD academic calendar for the 2026-2027 school year starts on Thursday, August 13, 2026 and ends on Wednesday, May 26, 2027. Through the fall, families can plan around Labor Day on September 7 and the Thanksgiving break from November 23 through 27. The winter break runs from December 1 through 4. In the second semester, the calendar includes the Martin Luther King Jr. holiday on January 18, a spring break from March 8 through 12, and Memorial Day on May 31.

Last updated August 4, 2026

Official Calendar

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Official Sinton ISD 2026–2027 calendar

Printable calendar (PDF)

Sinton ISD printable 2026–2027 calendar PDF

Full-year Sinton ISD calendar with every key date — district logo, color legend and a QR code to this page.

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Interactive calendar

Browse the key dates month by month — colored markers show each event.

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    Calendar Dates

    • New Employee OrientationAug 3 — Aug 7Event
    • Teacher Work DayAug 10, 2026Teacher Day
    • Campus ProfessionalAug 11, 2026Event
    • Development & PlanningAug 12, 2026Event
    • First Day of SchoolAug 13, 2026School Opens
    • Labor Day HolidaySep 7, 2026No School
    • Campus ProfessionalSep 14, 2026Event
    • Teacher Work Day / Early ReleaseSep 25, 2026Teacher Day
    • Development & PlanningOct 9, 2026Event
    • Campus ProfessionalOct 12, 2026Event
    • Development & PlanningOct 13, 2026Event
    • Teacher Work Day / Early ReleaseOct 16, 2026Teacher Day
    • Parent Teacher ConferenceOct 19, 2026Teacher Day
    • Teacher Work Day / Early ReleaseNov 20, 2026Teacher Day
    • Thanksgiving BreakNov 23 — Nov 27No School
    • Winter BreakDec 1 — Dec 4No School
    • Campus ProfessionalDec 7, 2026Event
    • Teacher Work Day / Early ReleaseDec 18, 2026Teacher Day
    • Winter BreakDec 21 — Dec 31No School
    • Winter BreakJan 1, 2027No School
    • School HolidayJan 4, 2027No School
    • Teacher Work Day / Development & PlanningJan 5, 2027Teacher Day
    • Martin Luther King Jr. DayJan 18, 2027No School
    • School HolidayJan 28 — Jan 29No School
    • Parent Teacher ConferenceFeb 15, 2027Teacher Day
    • Development & PlanningMar 5, 2027Event
    • Spring BreakMar 8 — Mar 12No School
    • Campus ProfessionalMar 15, 2027Event
    • Development & PlanningMar 16, 2027Event
    • Good FridayMar 26, 2027No School
    • School HolidayMar 29, 2027No School
    • STAAR / EOC TestingApr 6 — Apr 7Event
    • STAAR / EOC TestingApr 13 — Apr 15Event
    • STAAR / EOC TestingApr 20 — Apr 21Event
    • Teacher Work Day / Early ReleaseMay 27 — May 28Teacher Day
    • GraduationMay 28, 2027Event
    • Memorial Day HolidayMay 31, 2027No School
    • Summer SchoolJun 1 — Jun 17Event
    • Last Day of SchoolMay 26, 2027School Closes

    Frequently asked questions

    When is the first day of school for Sinton ISD in 2026-2027?

    The first day of school for Sinton ISD is Thursday, August 13, 2026.

    When is the last day of school for Sinton ISD in 2026-2027?

    The last day of school for Sinton ISD is Wednesday, May 26, 2027.

    When is Thanksgiving break for Sinton ISD?

    Sinton ISD has Thanksgiving break from November 23 through 27, 2026.

    When is winter break for Sinton ISD?

    Sinton ISD's winter break runs from December 1 through 4.

    When is spring break for Sinton ISD in 2026-2027?

    Sinton ISD's spring break is March 8 through 12, 2027.

    Does Sinton ISD have school on Martin Luther King Jr. Day?

    No. Sinton ISD is closed for Martin Luther King Jr. Day on Monday, January 18, 2027.

    Does Sinton ISD have school on Labor Day?

    No. Sinton ISD is closed for Labor Day on Monday, September 7, 2026.

    Does Sinton ISD have school on Memorial Day?

    No. Sinton ISD is closed for Memorial Day on Monday, May 31, 2027.

    When is the first day of school in Sinton ISD for the 2026-2027 school year?

    The first day of school for students in Sinton ISD is Thursday, August 13, 2026.

    When is Spring Break in Sinton ISD for 2026-2027?

    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.

    When is Christmas Break in Sinton ISD for 2026-2027?

    Christmas Break begins on December 21, 2026 and continues through January 4, 2027. Classes resume after the teacher work day on January 5, 2027.

    When is Winter Break in Sinton ISD for 2026-2027?

    Winter Break runs from December 21, 2026, through January 4, 2027, including the Christmas and New Year holidays.

    When is Thanksgiving Break in Sinton ISD for 2026-2027?

    Thanksgiving Break is scheduled from November 23 through November 27, 2026.

    What is the last day of school in Sinton ISD for the 2026-2027 school year?

    The last instructional day for students in Sinton ISD is Wednesday, May 26, 2027.

    When is Labor Day holiday in Sinton ISD during the 2026-2027 school year?

    Sinton ISD observes Labor Day on September 7, 2026, and there are no classes.

    When is Memorial Day holiday in Sinton ISD for 2026-2027?

    Memorial Day is observed on May 31, 2027.

    When are Teacher Work Days in Sinton ISD for the 2026-2027 school year?

    Teacher Work Days are scheduled on August 10, September 25, October 16, November 20, December 18, January 5, May 27, and May 28, 2027.

    When are Parent-Teacher Conferences in Sinton ISD during 2026-2027?

    Parent-Teacher Conferences are scheduled for October 19, 2026 and February 15, 2027.

    When are STAAR/EOC testing dates in Sinton ISD for the 2026-2027 school year?

    STAAR/EOC testing is scheduled for April 6-7, April 13-15, and April 20-21, 2027.

    When is Graduation for Sinton ISD in 2027?

    Graduation for Sinton ISD is scheduled for May 28, 2027.

    When is Summer School in Sinton ISD for 2027?

    Summer School is scheduled from June 1 through June 17, 2027.

    When do new employees report for Sinton ISD in 2026?

    New Employee Orientation is scheduled from August 3 through August 7, 2026.

    When are Development & Planning days in Sinton ISD during the 2026-2027 school year?

    Development & Planning days are scheduled on August 12, October 9, October 13, January 5, and March 5 & 16, 2027.

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