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Sinton ISD Calendar 2026-2027

San Patricio County · Corpus Christi area (Region 2)

  • First day of schoolAugust 13, 2026
  • Labor DaySeptember 7, 2026
  • Thanksgiving breakNovember 23–27, 2026
  • Winter breakDecember 1–4, 2026
  • MLK Jr. DayJanuary 18, 2027
  • Spring breakMarch 8–12, 2027
  • Memorial DayMay 31, 2027
  • Last day of schoolMay 26, 2027

Last updated September 18, 2026

Interactive calendar

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

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    Printable Calendar PDF

    Official Calendar

    Source: Sinton ISD (sintonisd.net) ↗
    First day: Thursday, August 13, 2026

    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 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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