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Lewisville ISD Calendar 2026-27: First Day, Breaks & Holidays
The Lewisville ISD academic year at a glance for Flower Mound families, with the official calendar link. Updated July 2026.
| Milestone | Date |
|---|---|
| First day of school (2026-27) | August 12, 2026 |
| Winter break | December 21, 2026 – January 1, 2027 (students return January 5, 2027) |
| Last day of school | May 21, 2027 |
Official calendar
Lewisville ISD maintains the authoritative calendar — including any mid-year revisions, early-release days, and staff-development days.
Official Lewisville ISD calendar →Related
About this information: Compiled July 2026 from official local sources. Schedules and rules change — always confirm with the official links above before planning.