Visual Calendar
Official calendar scans for Seminole ISD. Click any image to open full-screen.
Official Document
The official calendar PDF published by Seminole ISD. Download or view inline.
School Calendar
Month-by-month view of Seminole ISD's 2026–2027 academic calendar — holidays, breaks, and key dates.
About the District
Details and contact information for Seminole ISD.
Common Questions
Seminole ISD Calendar 2026–2027 — important dates and answers.
The first day of school in Seminole ISD for the 2026–2027 academic year is August 12, 2026.
Spring Break in Seminole ISD is scheduled from March 15 through March 19, 2027.
Christmas Break for Seminole ISD students falls during the Winter Break period from December 21 to December 31, 2026.
Winter Break in Seminole ISD runs from December 21 through December 31, 2026, with an additional New Year’s holiday on January 1, 2027.
Thanksgiving Break in Seminole ISD is scheduled from November 23 to November 27, 2026.
The last day of school for Seminole ISD students in the 2026–2027 school year is May 21, 2027.
Graduation for Seminole ISD seniors is scheduled for May 21, 2027.
New Staff Inservice days in Seminole ISD are July 31, 2026, and August 3–4, 2026.
Staff Development days in Seminole ISD take place from August 3 to August 7, 2026, and August 10 to August 11, 2026.
The Seminole ISD 2026–2027 academic calendar includes a total of 170 student days.
Explore More
Other Texas school district calendars — recently added or updated.