- School starts Wednesday, Aug. 12, 2026 and ends Friday, May 21, 2027, an early release day.
- Thanksgiving break: Nov. 23 to 27. Students are out Saturday, Nov. 21 to Sunday, Nov. 29, back Monday, Nov. 30.
- Winter break: Dec. 21 to Jan. 1. Students are out Saturday, Dec. 19 to Monday, Jan. 4, back Tuesday, Jan. 5.
- Spring break: March 15 to 19. Students are out Saturday, March 13 to Sunday, March 21, back Monday, March 22.
- Two early release days for every school. Details below.
The LISD 2026-27 calendar
This is the district's own calendar, as LISD publishes it. Tap it to open the full-size image.
Add the LISD calendar to your phone
Pick a file. Each one is an all-day event per day off or half day, and a break is one event across all its days.
On an iPhone
Tap a file above, then tap Add All. The dates go into the calendar you choose.
In Google Calendar
On a computer, open Google Calendar, then Settings, then Import & export. Choose the file and the calendar to add it to. The dates show up on your Android phone too.
In Outlook
Open the downloaded file, or in Outlook on the web go to Add calendar, then Upload from file.
These files are a copy of the calendar today. If the district changes a date, download the file again.
LISD vacations and holidays, 2026-27
Every day with no school for students, from the first day to the last: 12 entries and 29 weekdays in all.
| Day off | Dates | Days of the week | School days off |
|---|---|---|---|
| Labor Day Holiday | Sept. 7 | Mon | 1 |
| Student holiday, staff day Staff day | Oct. 9 | Fri | 1 |
| Fall holiday Holiday | Oct. 12 | Mon | 1 |
| Student holiday, staff day Staff day | Nov. 3 | Tue | 1 |
| Thanksgiving break Break | Nov. 23 to 27 | Mon to Fri | 5 |
| Winter break Break | Dec. 21 to Jan. 1 | Mon to Fri | 10 |
| Staff day (no school) Staff day | Jan. 4 | Mon | 1 |
| Martin Luther King Jr. Day Holiday | Jan. 18 | Mon | 1 |
| Student holiday, staff day Staff day | Feb. 15 | Mon | 1 |
| Spring break Break | March 15 to 19 | Mon to Fri | 5 |
| Spring holiday Holiday | March 26 | Fri | 1 |
| Bad weather day Makeup | March 29 | Mon | 1 |
LISD early release days
Two early release days in all.
| Date | Day | What | Dismissal | Who |
|---|---|---|---|---|
| Dec. 18 | Fri | Early release before winter break | 11:45 a.m. elementary, 12:20 p.m. middle, 1 p.m. high school | All schools |
| May 21 | Fri | Last day of school | 11:45 a.m. elementary, 12:20 p.m. middle, 1 p.m. high school | All schools |
Calendar notes: what to plan around
Long weekends and breaks
Every stretch of three or more days with no school, counting weekends. A half day next to a weekend adds half a day.
- 3-day weekend: Saturday, Sept. 5 to Monday, Sept. 7. Labor Day. Back Tuesday, Sept. 8.
- 4-day weekend: Friday, Oct. 9 to Monday, Oct. 12. Student holiday, staff day and fall holiday. Back Tuesday, Oct. 13.
- 9 days off in a row: Saturday, Nov. 21 to Sunday, Nov. 29. Thanksgiving break. Back Monday, Nov. 30.
- 17.5 days off in a row: Friday, Dec. 18 at early dismissal to Monday, Jan. 4. Early release before winter break, winter break and staff day (no school). Back Tuesday, Jan. 5.
- 3-day weekend: Saturday, Jan. 16 to Monday, Jan. 18. Martin Luther King Jr. Day. Back Tuesday, Jan. 19.
- 3-day weekend: Saturday, Feb. 13 to Monday, Feb. 15. Student holiday, staff day. Back Tuesday, Feb. 16.
- 9 days off in a row: Saturday, March 13 to Sunday, March 21. Spring break. Back Monday, March 22.
- 4-day weekend: Friday, March 26 to Monday, March 29. Spring holiday and Bad weather day. Back Tuesday, March 30.
Weeks with fewer than five school days
Ten weeks have fewer than five school days, and four weeks have none at all.
| Week of | School days | Why |
|---|---|---|
| Aug. 10 | 3 | Before the first day |
| Sept. 7 | 4 | Labor Day |
| Oct. 5 | 4 | Student holiday, staff day |
| Oct. 12 | 4 | Fall holiday |
| Nov. 2 | 4 | Student holiday, staff day |
| Nov. 23 | 0 | Thanksgiving break |
| Dec. 21 | 0 | Winter break |
| Dec. 28 | 0 | Winter break |
| Jan. 4 | 4 | Staff day (no school) |
| Jan. 18 | 4 | Martin Luther King Jr. Day |
| Feb. 15 | 4 | Student holiday, staff day |
| March 15 | 0 | Spring break |
| March 22 | 4 | Spring holiday |
| March 29 | 4 | Bad weather day |
Teacher workdays: no school for students
Four of the days off are staff days. Teachers work; students stay home. Plan child care as you would for a holiday.
- Friday, Oct. 9: student holiday, staff day
- Tuesday, Nov. 3: student holiday, staff day
- Monday, Jan. 4: staff day (no school)
- Monday, Feb. 15: student holiday, staff day
Makeup days
Bad weather day, Monday, March 29.
Also worth knowing
- School is open on a federal holiday: Veterans Day (Wednesday, Nov. 11). Banks, post offices and many offices close; school does not.
- The calendar lists no district-wide parent-teacher conference days.
- The calendar lists no testing dates. LISD links the state testing calendar from its Calendars page.
First and last day of school
The first day of school is Wednesday, Aug. 12, 2026. The last day is Friday, May 21, 2027, with early dismissal.
Teachers start sooner. Staff days before school run Aug. 3 to 11.
The district prints 174 instructional days across the quarters. Our count of the calendar matches.
Grading periods
LISD grades in nine-week periods. The first semester has 84 school days and the second has 90.
| Period | Dates | School days |
|---|---|---|
| 1st nine weeks | Aug. 12 to Oct. 8 | 41 |
| 2nd nine weeks | Oct. 13 to Dec. 18 | 43 |
| 3rd nine weeks | Jan. 5 to March 12 | 47 |
| 4th nine weeks | March 22 to May 21 | 43 |
What the district notes
- School hours are new for 2026-27. High school runs 8:50 a.m. to 4:15 p.m., middle school 8:15 a.m. to 3:40 p.m. and elementary school 7:40 a.m. to 3:05 p.m. Half-day pre-K runs 7:40 to 10:51 a.m. or 11:54 a.m. to 3:05 p.m.
- Lillie J. Jackson Early Childhood Center posts its own hours at lisd.net/ecchours.
- For religious holy days, LISD points families to the Student Handbook.
Common questions
When does LISD start in 2026?
The first day of school for Lewisville Independent School District is Wednesday, Aug. 12, 2026.
When is the last day of school for LISD in 2027?
The last day for students is Friday, May 21, 2027. It is an early release day.
When is winter break for LISD?
Winter break runs Monday, Dec. 21 to Friday, Jan. 1. Counting weekends and the days next to it, students are out Saturday, Dec. 19 to Monday, Jan. 4 and go back Tuesday, Jan. 5.
When is spring break for LISD?
Spring break runs Monday, March 15 to Friday, March 19. Counting weekends, students are out Saturday, March 13 to Sunday, March 21 and go back Monday, March 22.
When is Thanksgiving break for LISD?
Thanksgiving break runs Monday, Nov. 23 to Friday, Nov. 27. Counting weekends, students are out Saturday, Nov. 21 to Sunday, Nov. 29 and go back Monday, Nov. 30.
Does LISD have early release days in 2026-27?
Yes. Friday, Dec. 18 (11:45 a.m. elementary, 12:20 p.m. middle, 1 p.m. high school) and Friday, May 21 (11:45 a.m. elementary, 12:20 p.m. middle, 1 p.m. high school) are for every school.
How do I put the LISD calendar on my phone?
Download one of the .ics files on this page. On an iPhone, open it and tap Add All. On Android or a computer, import it into Google Calendar or Outlook.
How we checked these dates
We read every date off the district's own calendar twice: once from the PDF's text and once from the image, cell by cell against its legend. Then we checked each one against the LISD web calendar.
Every weekday on this page matches its date. The district's printed day counts match our own count of its calendar. If the district changes its calendar, its page is the final word.
Where each date is on the district's calendar
- First day, Aug. 12: Lewisville ISD Academic Calendar 2026-2027 (PDF), page 1, August grid, 12 in red with an opening bracket (First Day of School; Nine Weeks Begins); list "12: First Day of School". Also: Lewisville ISD Calendars page and district events calendar, Aug. 12 "First Day of School".
- Last day, May 21: Lewisville ISD Academic Calendar 2026-2027 (PDF), page 1, May grid, 21 in yellow with a closing bracket (Student Early Release; Nine Weeks Ends); list "21: Student Early Release"; "Fourth 9 Weeks (43 Days) March 22 - May 21"; no school day is marked after it. Also: Lewisville ISD Calendars page and district events calendar, May 21 "Student Early Release"; no school events after it.
- Staff days before school starts, Aug. 3 to 11: Lewisville ISD Academic Calendar 2026-2027 (PDF), page 1, August grid, 3 to 7 and 10 to 11 in purple (Staff Day); list "3-7, 10/11: Staff Day". Also: Lewisville ISD Calendars page and district events calendar, "Staff Day" Aug. 3 to 7 and Aug. 10 to 11.
- Labor Day, Sept. 7: Lewisville ISD Academic Calendar 2026-2027 (PDF), page 1, September grid, 7 in green (Holiday); list "7: Holiday". Also: Lewisville ISD Calendars page and district events calendar, Sept. 7 "Holiday".
- Student holiday, staff day, Oct. 9: Lewisville ISD Academic Calendar 2026-2027 (PDF), page 1, October grid, 9 in purple (Staff Day) after the closing bracket of the first nine weeks on 8; list "9: Student Holiday, Staff Day". Also: Lewisville ISD Calendars page and district events calendar, Oct. 9 "Holiday".
- Fall holiday, Oct. 12: Lewisville ISD Academic Calendar 2026-2027 (PDF), page 1, October grid, 12 in green (Holiday); list "12: Holiday". Also: Lewisville ISD Calendars page and district events calendar, Oct. 12 "Holiday".
- Student holiday, staff day, Nov. 3: Lewisville ISD Academic Calendar 2026-2027 (PDF), page 1, November grid, 3 in purple (Staff Day); list "3: Student Holiday, Staff Day". Also: Lewisville ISD Calendars page and district events calendar, Nov. 3 "Student Holiday / Staff Day".
- Thanksgiving break, Nov. 23 to 27: Lewisville ISD Academic Calendar 2026-2027 (PDF), page 1, November grid, 23 to 27 in green (Holiday); list "23-27: Holiday". Also: Lewisville ISD Calendars page and district events calendar, "Holiday" Nov. 23 to 27.
- Winter break, Dec. 21 to Jan. 1: Lewisville ISD Academic Calendar 2026-2027 (PDF), page 1, December grid, 21 to 25 and 28 to 31 in green; January grid, 1 in green; lists "21-31: Holiday" and "1: Holiday". Also: Lewisville ISD Calendars page and district events calendar, "Holiday" Dec. 21, 2026 to Jan. 1, 2027.
- Staff day (no school), Jan. 4: Lewisville ISD Academic Calendar 2026-2027 (PDF), page 1, January grid, 4 in purple (Staff Day); list "4: Staff Day" and "5: Students Return". Also: Lewisville ISD Calendars page and district events calendar, Jan. 4 "Staff Day / Student Holiday"; Jan. 5 "Students Return".
- Martin Luther King Jr. Day, Jan. 18: Lewisville ISD Academic Calendar 2026-2027 (PDF), page 1, January grid, 18 in green (Holiday); list "18: Holiday". Also: Lewisville ISD Calendars page and district events calendar, Jan. 18 "Holiday".
- Student holiday, staff day, Feb. 15: Lewisville ISD Academic Calendar 2026-2027 (PDF), page 1, February grid, 15 in purple (Staff Day); list "15: Student Holiday, Staff Day". Also: Lewisville ISD Calendars page and district events calendar, Feb. 15 "Student Holiday / Staff Day".
- Spring break, March 15 to 19: Lewisville ISD Academic Calendar 2026-2027 (PDF), page 1, March grid, 15 to 19 in green (Holiday); list "15-19: Holiday". Also: Lewisville ISD Calendars page and district events calendar, "Holiday" March 15 to 19.
- Spring holiday, March 26: Lewisville ISD Academic Calendar 2026-2027 (PDF), page 1, March grid, 26 in green (Holiday); list "26: Holiday". Also: Lewisville ISD Calendars page and district events calendar, March 26 "Holiday".
- Bad weather day, March 29: Lewisville ISD Academic Calendar 2026-2027 (PDF), page 1, March grid, 29 in teal (Bad Weather Day); list "29: Bad Weather Day"; not counted in "Fourth 9 Weeks (43 Days) March 22 - May 21". Also: Lewisville ISD Calendars page and district events calendar, March 29 "Bad Weather Day".
- Early release before winter break, Dec. 18: Lewisville ISD Academic Calendar 2026-2027 (PDF), page 1, December grid, 18 in blue with a closing bracket (Student & Staff Early Release); list "18: Student & Staff Early Release". Also: Lewisville ISD Calendars page and district events calendar, Dec. 18 "Student & Staff Early Release".
- Last day of school, May 21: Lewisville ISD Academic Calendar 2026-2027 (PDF), page 1, May grid, 21 in yellow (Student Early Release); list "21: Student Early Release". Also: Lewisville ISD Calendars page and district events calendar, May 21 "Student Early Release".
- Dismissal time, Early release before winter break, Dec. 18: Lewisville ISD Academic Calendar 2026-2027 (PDF), page 1, box "New School Hours for 2026-2027": High School "Early Release: 1 p.m."; Middle School "Early Release: 12:20 p.m."; Elementary School "Early Release: 11:45 a.m.".
- Dismissal time, Last day of school, May 21: Lewisville ISD Academic Calendar 2026-2027 (PDF), page 1, box "New School Hours for 2026-2027": early release 1 p.m. (high school), 12:20 p.m. (middle school), 11:45 a.m. (elementary school).
- 1st nine weeks: Lewisville ISD Academic Calendar 2026-2027 (PDF), page 1, "First 9 Weeks (41 Days) August 12 - October 8"; brackets on Aug. 12 and Oct. 8.
- 2nd nine weeks: Lewisville ISD Academic Calendar 2026-2027 (PDF), page 1, "Second 9 Weeks (43 Days) October 13 - December 18"; brackets on Oct. 13 and Dec. 18.
- 3rd nine weeks: Lewisville ISD Academic Calendar 2026-2027 (PDF), page 1, "Third 9 Weeks (47 Days) January 5 - March 12"; brackets on Jan. 5 and March 12.
- 4th nine weeks: Lewisville ISD Academic Calendar 2026-2027 (PDF), page 1, "Fourth 9 Weeks (43 Days) March 22 - May 21"; brackets on March 22 and May 21.