Katy ISD 2026-27 calendar: key dates for Cinco Ranch families

Katy ISD runs on an official instructional calendar approved by the Board of Trustees, and the 2026-27 version was set back in January 2026. The dates that matter most to Cinco Ranch families in the coming months: fall break lands October 9-13, 2026, Thanksgiving break is November 23-27, winter break runs December 21 through January 1, and spring break is March 8-12, 2027. The last day of school is Wednesday, May 26, 2027. Here is the rundown, straight from the district calendar.

The dates that matter between now and summer

Everything below comes from the official Katy ISD instructional calendar for 2026-27. Every campus in Cinco Ranch follows the same district calendar, from the elementary and junior high feeders up to Cinco Ranch, Seven Lakes, and Tompkins high schools.

• Fall break: October 9-13, 2026, for students and staff. This is a new addition to the calendar, so double-check it against older habits before booking anything.
• Thanksgiving break: November 23-27, 2026, for students and staff.
• Early dismissal and end of the fall semester: Friday, December 18, 2026.
• Winter break: December 21-31, 2026, through January 1, 2027. Students return Tuesday, January 5, 2027; January 4 is a campus work day with no students.
• MLK Day: Monday, January 18, 2027, a holiday for students and staff.
• Monday, February 15, 2027, is a holiday for students and staff.
• Spring break: March 8-12, 2027, for students and staff.
• Last day of school: Wednesday, May 26, 2027, with early dismissal. Seniors finish earlier, on May 14, 2027.

How this calendar was set

The Katy ISD Board of Trustees approved the 2026-27 instructional calendar on January 20, 2026, and later amended it to add the October fall break. The district publishes the official calendar on its website, and that version is the one to trust over third-party summaries, which sometimes lag the amendment.

Two details worth knowing: the school year started Wednesday, August 12, 2026, and Labor Day (September 7, 2026) has already passed. Memorial Day 2027 falls after the school year ends, so it is not part of the instructional calendar.

Already planning next year? The 2027-28 calendar is out too

The board approved the 2027-28 calendar at the same January 2026 meeting, and it keeps the fall break structure. The first day of school is Wednesday, August 11, 2027, and fall break is October 8-12, 2027. If you are buying in Cinco Ranch with a move next summer, those dates are already on the books.

Where to check the official calendar

How this fits with your Cinco Ranch school questions

The calendar is the same district-wide, but what your specific address feeds into is not. Cinco Ranch homes zone to different elementary, junior high, and high schools depending on the exact street address, so the calendar tells you when school is off, and the district's address lookup tells you which campus your kids would attend.