Keller ISD 2025–2026 School Year Calendar
Keller Independent School District (Keller ISD) has officially released its instructional calendar for the 2025–2026 academic year. The calendar outlines critical dates for school holidays, teacher planning, early releases, and testing windows, helping families and staff plan ahead.
📅 Key Dates:
- First Day of School: August 13, 2025
- Last Day of School: May 21, 2026
- Graduation: May 23, 2026
🏖️ Major Holidays & Breaks:
- Labor Day: September 1, 2025
- Fall Break: October 13–17, 2025
- Thanksgiving Break: November 24–28, 2025
- Winter Break: December 22, 2025 – January 2, 2026
- Martin Luther King Jr. Day: January 19, 2026
- Spring Break: March 16–20, 2026
- Memorial Day: May 25, 2026
🧑🏫 Student & Teacher Planning Days:
- Student Holidays / Teacher Prep:
- October 10, 2025
- January 5 & 19, 2026
- February 13 & 16, 2026
- March 13, 2026
- April 6, 2026
- Teacher EQ/PD Only (No School):
- April 3, 2026
- May 22, 2026
⏰ Early Release Days:
- Grades 9–12 Only:
- December 18, 2025
- May 20, 2026
- All Schools:
- December 19, 2025
- May 21, 2026 (Last Day)
🧪 Testing Dates:
- State/AP Assessments are noted throughout April and May, including April 7, 14, 21, 28 and May 5, 12, 19, 20–21.
This well-structured calendar helps Keller ISD students, parents, and staff prepare for a successful 2025–2026 academic year, with a thoughtful balance of instructional time and needed breaks.