Visual Calendar
Official calendar scans for O'Fallon Community Consolidated School District No. 90. Click any image to open full-screen.
School Calendar
Download O'Fallon Community Consolidated School District No. 90's 2026–2027 academic calendar PDF — holidays, breaks, and key dates.
About the District
Details and contact information for O'Fallon Community Consolidated School District No. 90 (CCSD 90).
Common Questions
O'Fallon Community Consolidated School District No. 90 Calendar 2026–2027 — important dates and answers.
The first day of school is August 12, 2026.
Spring break is from March 26, 2027 to April 2, 2027.
Christmas break falls within the winter break from December 21, 2026 to January 1, 2027.
Winter break is from December 21, 2026 through January 1, 2027.
Thanksgiving (Fall Break) is from November 25 through November 27, 2026.
The last day of school is May 20, 2027. If emergency days are used, it may extend to May 27, 2027.
School resumes on January 5, 2027.
Labor Day is observed on September 7, 2026, and there is no school.
Memorial Day is on May 31, 2027.
Parent-teacher conferences are scheduled on October 7-8, 2026 and February 11-12, 2027.
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