Lewisville ISD Calendar 2026-2027

Lewisville ISD students start Wednesday, August 12, 2026. The first nine-week grading period begins that day.

Lewisville ISD’s District of Innovation plan exempts the district from the state’s uniform start-date rule, giving LISD flexibility to begin school before the fourth Monday in August. The 2026-27 calendar lists August 12 as the first student day.

Friday, May 21, 2027, is the final student date shown on the academic calendar. It is a student early-release day and the end of the fourth grading period. The PDF does not separately label it 'last day of school.'

Yes. October 9 is a Student Holiday, Staff Day and October 12 is a Holiday. With the intervening weekend, students have four consecutive days off and return Tuesday, October 13. The PDF lists the two dates separately rather than naming an October break.

Students are off November 23–27, 2026, for Thanksgiving week and return Monday, November 30. The academic PDF labels November 23–27 as Holiday.

The PDF marks December 21, 2026, through January 1, 2027, as holidays. January 4 is a separate staff day without student classes, so students return Tuesday, January 5.

Students are off March 15–19, 2027, and return Monday, March 22, when the fourth nine-week period begins. The PDF labels March 15–19 as Holiday.

During the student school year, students have no classes October 9, November 3, January 4 and February 15. January 4 follows the winter holidays; the other three dates are labeled Student Holiday, Staff Day.

The district calendar lists September 7 and October 12, 2026, and January 18 and March 26, 2027, as Holiday. These are separate from student holiday/staff days and multi-day holiday periods.

No. Friday, March 26, is labeled Holiday. March 29 is a separate, conditional bad-weather day, not another confirmed holiday.

March 29 is reserved as a bad-weather day. No regular classes are scheduled on the adopted calendar, but the district may require attendance if it needs to recover instructional time. Check Lewisville ISD announcements before making firm plans.

The district calendar lists December 18, 2026, as Student & Staff Early Release and May 21, 2027, as Student Early Release.

High school dismisses at 1:00 p.m., middle school at 12:20 p.m., elementary school at 11:45 a.m. and Early Childhood Centers at 11:30 a.m. The centers list separate half-day ECSE early-release sessions: 7:25–9:30 a.m. and 9:30–11:35 a.m.

High school runs 8:50 a.m.–4:15 p.m., middle school 8:15 a.m.–3:40 p.m., elementary school 7:40 a.m.–3:05 p.m. and Early Childhood Centers 7:25 a.m.–2:50 p.m. The academic calendar highlights new school hours for 2026-2027; the district’s School Hours page also lists half-day ECSE sessions.

The four nine-week periods are August 12–October 8, October 13–December 18, January 5–March 12 and March 22–May 21. The district calendar reports 41, 43, 47 and 43 student days in those periods.

The calendar has 174 student days: 84 in the first semester and 90 in the second. Early-release days still count as attendance days, while the reserved March 29 bad-weather day is not part of the regular 174-day schedule.

Elementary half-day ECSE sessions run 7:40–10:51 a.m. and 11:54 a.m.–3:05 p.m. At Early Childhood Centers, sessions run 7:25–10:36 a.m. and 11:39 a.m.–2:50 p.m.; early-release sessions run 7:25–9:30 a.m. and 9:30–11:35 a.m.

Lewisville ISD’s Calendars page links the 2026-2027 Academic Calendar PDF. The official PDF download on this page points to that district-hosted file.