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Lancaster ISD Calendar 2026-2027

Dallas County · Richardson area (Region 10)

First day of school: Wednesday, August 12, 2026

The Lancaster ISD academic calendar for the 2026-2027 school year starts on Wednesday, August 12, 2026 and ends on Friday, May 28, 2027. Through the fall, families can plan around Labor Day on September 7, a fall break from October 12 through 16, and the Thanksgiving break from November 23 through 27. The winter break runs from December 21 through 31. In the second semester, the calendar includes the Martin Luther King Jr. holiday on January 18, a spring break from March 15 through 19, and Memorial Day on May 31.

Last updated August 4, 2026

Official Calendar

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Official Lancaster ISD 2026–2027 calendar

Printable calendar (PDF)

Lancaster ISD printable 2026–2027 calendar PDF

Full-year Lancaster 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

    • 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 31.

    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 is the first day of school in Lancaster Independent School District Calendar 2026-2027?

    The first day of school for students in Lancaster Independent School District for the 2026-2027 school year is August 12, 2026.

    When is Spring Break in Lancaster Independent School District Calendar 2026-2027?

    Spring Break is scheduled from March 15 through March 19, 2027.

    When is Christmas Break in Lancaster Independent School District Calendar 2026-2027?

    Christmas Break is part of the Winter Break, beginning on December 21, 2026 and continuing through January 1, 2027.

    When is Winter Break in Lancaster Independent School District Calendar 2026-2027?

    Winter Break runs from December 21, 2026, through January 1, 2027. Students return to school on January 6, 2027 after staff professional learning days.

    When is Thanksgiving Break in Lancaster Independent School District Calendar 2026-2027?

    Thanksgiving Break is scheduled for November 23-27, 2026.

    When is the last day of school in Lancaster Independent School District Calendar 2026-2027?

    The last day of school for students is May 27, 2027. Teachers' final workday is May 28, 2027.

    When is Fall Break in Lancaster Independent School District Calendar 2026-2027?

    Fall Break takes place from October 12-16, 2026. October 12 is also Student Fair Day.

    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 Labor Day observed in Lancaster Independent School District Calendar 2026-2027?

    Labor Day will be observed on September 7, 2026, and schools will be closed.

    When is Martin Luther King Jr. Day in Lancaster Independent School District Calendar 2026-2027?

    Martin Luther King Jr. Day is observed on January 18, 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.

    When is Memorial Day in Lancaster Independent School District Calendar 2026-2027?

    Memorial Day is observed on May 31, 2027.

    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.

    When do students return after Winter Break in Lancaster Independent School District Calendar 2026-2027?

    Students return to school on January 6, 2027, following Winter Break and Professional Learning days.

    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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