Mcmullen County ISD Calendar 2026-2027

Heads up: the 2026–2027 schedule below is a general Texas reference. For Mcmullen County ISD's exact dates, use the official link in the sidebar.

• First day First day of school (typical window) Aug 12–19, 2026
• Holiday Labor Day Sep 7, 2026
• Break Thanksgiving break Nov 23–27, 2026
• Break Winter break Dec 21, 2026 – Jan 1, 2027
• Holiday Martin Luther King Jr. Day Jan 18, 2027
• Holiday Presidents' Day (varies) Feb 15, 2027
• Break Spring break (typical window) Mar 15–19, 2027
• Testing STAAR testing windows Apr–May 2027
• Holiday Memorial Day May 31, 2027
• Last day Last day of school (typical window) May 27 – Jun 3, 2027