Lewisville ISD Calendar 2026-27: Spring Break March 15-19 and New School Hours

Lewisville Independent School District (LISD) marks Monday, Nov. 23 to Friday, Nov. 27, 2026, Monday, Dec. 21 to Friday, Jan. 1, 2027, and Monday, March 15 to Friday, March 19, 2027 as holidays, according to the 2026-27 academic calendar PDF linked from the district’s “Calendars” page. Students return Tuesday, Jan. 5, 2027.

The calendar prints the word “Holiday” for those weeks and does not name Thanksgiving or spring break, so those labels are our reading. This story adds the weekday for every day off, the four nine-week periods with their day counts, the new 2026-27 bell times and a comparison with Plano and Dallas. A printable school-year calendar is at the bottom of the page.

Lewisville ISD days off in 2026-27

Dates before today, Nov. 5, 2026, are marked past. The words are the calendar’s own; the weekdays are ours.

Date	What the calendar lists
Wed., Aug. 12, 2026 (past)	First Day of School
Mon., Sept. 7, 2026 (past)	Holiday (Labor Day)
Fri., Oct. 9, 2026 (past)	Student Holiday, Staff Day
Mon., Oct. 12, 2026 (past)	Holiday
Tue., Nov. 3, 2026 (past)	Student Holiday, Staff Day
Mon.-Fri., Nov. 23-27, 2026	Holiday
Fri., Dec. 18, 2026	Student & Staff Early Release
Mon., Dec. 21 to Thu., Dec. 31, 2026	Holiday
Fri., Jan. 1, 2027	Holiday
Mon., Jan. 4, 2027	Staff Day
Tue., Jan. 5, 2027	Students Return
Mon., Jan. 18, 2027	Holiday
Mon., Feb. 15, 2027	Student Holiday, Staff Day
Mon.-Fri., March 15-19, 2027	Holiday
Fri., March 26, 2027	Holiday
Mon., March 29, 2027	Bad Weather Day
Fri., May 21, 2027	Student Early Release
Mon., May 31, 2027	Holiday

The calendar also lists staff days on Aug. 3-7, 10 and 11 before the first day. The December 2026 printable calendar shows the winter weeks.

Is school open on March 29, 2027?

The calendar marks Monday, March 29, 2027 as a “Bad Weather Day”. It does not call it a make-up day or say whether classes meet, so check with the district before you plan around it. Friday, March 26 is a holiday on the calendar, which means the March 2027 printable calendar shows spring break week, a holiday Friday and then March 29 with its own label. Spring break week is also the end of the third nine weeks: that period runs through March 12, and the fourth starts March 22.

How long are the Lewisville ISD nine-week periods?

The calendar prints the periods and day counts below. Adding them gives 174 days by our sum. It also prints a first semester of 84 days and a second of 90.

Period	Dates	Days
First 9 Weeks	Aug. 12 - Oct. 8, 2026	41
Second 9 Weeks	Oct. 13 - Dec. 18, 2026	43
Third 9 Weeks	Jan. 5 - March 12, 2027	47
Fourth 9 Weeks	March 22 - May 21, 2027	43
Total (our sum)		174

The first semester’s 84 days are the first two periods (41 plus 43), and the second semester’s 90 are the last two (47 plus 43).

What are the new Lewisville ISD school hours?

The district’s staff page says “The Board voted to change school start and end times for the 2026-2027 school year in January 2026.” The calendar’s “New School Hours for 2026-2027” box gives the same times. By our arithmetic each level’s day is 7 hours 25 minutes from start to end, and the three start times are 35 minutes apart.

Level	Start	End
Elementary	7:40 a.m.	3:05 p.m.
Middle	8:15 a.m.	3:40 p.m.
High	8:50 a.m.	4:15 p.m.

When is the last day of school in Lewisville ISD?

The calendar does not label a last day of school. The fourth nine weeks ends Friday, May 21, 2027, and the calendar lists that day as a student early release. Monday, May 31 is a holiday. The calendar does not list early-release dismissal times that we could read reliably, and we found no graduation dates or 2027-28 calendar on the district’s site as of Nov. 5, 2026.

How does Lewisville ISD compare with Plano and Dallas?

Plano dates come from our Plano ISD calendar story, which cites the Plano Independent School District’s 2026-27 calendar PDF dated April 20, 2026. Dallas dates come from our Dallas ISD calendar story and the Dallas Independent School District’s 2026-27 calendar PDF.

	Lewisville ISD	Plano ISD	Dallas ISD
First day	Wed., Aug. 12, 2026	Tue., Aug. 11, 2026	Tue., Aug. 11, 2026
Thanksgiving week	Nov. 23-27	Nov. 23-27	Nov. 23-27
Winter break	Dec. 21 to Jan. 1	Dec. 21 to Jan. 1	Dec. 21 to Jan. 4
Spring break	March 15-19	March 15-19	March 15-19
Last day	Not labeled; fourth nine weeks ends May 21	Fri., May 21, 2027	Wed., May 26, 2027

All three have the same spring week, March 15-19. Lewisville and Plano both list Dec. 21 to Jan. 1 and Tuesday, Jan. 5 as the return; Plano also lists Jan. 4 as a student holiday, and Dallas lists winter break through Jan. 4. Lewisville starts a day after the other two. For other districts, see our spring break 2027 roundup.

Print the Lewisville ISD school-year calendar

The printable puts the first day, the holiday weeks, the days off and the two early releases on a 10-month sheet, with space to fill in conferences. It uses only the district’s dates and lists what the calendar does not say, including the last day of school and the bad weather day. Our printable school-year calendar has a blank layout.