Visual Calendar
Official calendar scans for San Marcos CISD. Click any image to open full-screen.
Official Document
The official calendar PDF published by San Marcos CISD. Download or view inline.
School Calendar
Month-by-month view of San Marcos CISD's 2026–2027 academic calendar — holidays, breaks, and key dates.
About the District
Details and contact information for San Marcos CISD.
Common Questions
San Marcos CISD Calendar 2026–2027 — important dates and answers.
The first day of school for San Marcos CISD in the 2026-2027 school calendar is August 19, 2026.
Spring Break for San Marcos CISD in the 2026-2027 school year is scheduled from March 15 to March 19, 2027.
Christmas Break in San Marcos CISD for the 2026-2027 school year runs from December 21 to December 25, 2026.
Winter Break for San Marcos CISD students during the 2026-2027 academic year is from December 21, 2026 through January 1, 2027.
Thanksgiving Break for San Marcos CISD in the 2026-2027 school calendar is from November 23 to November 27, 2026.
The last day of school for students in San Marcos CISD for the 2026-2027 school year is May 27, 2027.
Labor Day holiday in San Marcos CISD for the 2026-2027 academic year is September 7, 2026.
Martin Luther King Jr. Day holiday in San Marcos CISD during the 2026-2027 school year is January 18, 2027.
Presidents' Day holiday in San Marcos CISD for the 2026-2027 academic year is February 15, 2027.
Parent Community Days in San Marcos CISD for the 2026-2027 school calendar are September 25, 2026 and February 12, 2027.
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