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Lancaster ISD Calendar 2026-2027

Dallas County · Richardson area (Region 10)

  • First day of schoolAugust 12, 2026
  • Labor DaySeptember 7, 2026
  • Fall breakOctober 12–16, 2026
  • Thanksgiving breakNovember 23–27, 2026
  • Winter breakDecember 21, 2026 – January 5, 2027
  • MLK Jr. DayJanuary 18, 2027
  • Spring breakMarch 15–19, 2027
  • Memorial DayMay 31, 2027
  • Last day of schoolMay 28, 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: Lancaster Independent School District (lancasterisd.org) ↗
    First day: Wednesday, August 12, 2026

    Calendar Dates

    • District Wide ClosureJul 6 — Jul 10Event
    • New Teacher OrientationJul 29 — Jul 31Teacher Day
    • Professional LearningAug 3 — Aug 7Event
    • Professional LearningAug 10 — Aug 11Event
    • First Day of SchoolAug 12, 2026School Opens
    • Labor DaySep 7, 2026No School
    • Parent Teacher ConferenceSep 23 — Sep 24Teacher Day
    • Student Fair DayOct 12, 2026Event
    • Fall BreakOct 12 — Oct 16No School
    • Professional Learning / Student HolidayNov 3, 2026No School
    • Thanksgiving BreakNov 23 — Nov 27No School
    • Winter BreakDec 21 — Dec 31No School
    • Winter BreakJan 1, 2027No School
    • Professional Learning / Student HolidayJan 4 — Jan 5No School
    • MLK HolidayJan 18, 2027No School
    • Parent Teacher ConferenceFeb 10 — Feb 11Teacher Day
    • Professional Learning / Student Holiday (Bad Weather Day)Feb 15, 2027No School
    • Spring BreakMar 15 — Mar 19No School
    • Good Friday (Bad Weather Day)Mar 26, 2027No School
    • Last Day of School for StudentsMay 27, 2027School Closes
    • Professional Learning / Last Day for TeachersMay 28, 2027School Closes
    • Memorial DayMay 31, 2027No School
    • ADSY Summer SchoolJun 1 — Jul 2Event
    • Secondary Summer SchoolJun 1 — Jun 24Event
    • JuneteenthJun 18, 2027Event

    Frequently asked questions

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

    The first day of school for Lancaster ISD is Wednesday, August 12, 2026.

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

    The last day of school for Lancaster ISD is Friday, May 28, 2027.

    When is Thanksgiving break for Lancaster ISD?

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

    When is winter break for Lancaster ISD?

    Lancaster ISD's winter break runs from December 21 through January 5.

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

    Lancaster ISD's spring break is March 15 through 19, 2027.

    When is fall break for Lancaster ISD?

    Lancaster ISD has a fall break from October 12 through 16, 2026.

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

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

    Does Lancaster ISD have school on Labor Day?

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

    Does Lancaster ISD have school on Memorial Day?

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

    When are Parent-Teacher Conferences in Lancaster Independent School District Calendar 2026-2027?

    Parent-Teacher Conferences are scheduled for September 23-24, 2026 and February 10-11, 2027.

    When is Good Friday in Lancaster Independent School District Calendar 2026-2027?

    Good Friday is observed on March 26, 2027. It is also designated as a Bad Weather Day.

    Are there Professional Learning days in Lancaster Independent School District Calendar 2026-2027?

    Yes. Professional Learning days are scheduled for August 3-7, August 10-11, 2026, November 3, 2026, January 4-5, 2027, February 15, 2027, and May 28, 2027.

    Does Lancaster Independent School District offer summer school during the 2026-2027 calendar?

    Yes. ADSY Summer School runs from June 1 through July 2, 2027, while Secondary Summer School is scheduled from June 1-24, 2027.

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