The first day of school in Iroquois SD is Tue, Aug 25, 2026, and the last day of school is Fri, Jun 4, 2027, according to the district's published calendar. Scheduled breaks include IES: Thanksgiving Vacation (Wed, Nov 25, 2026 to Mon, Nov 30, 2026), No School - Thanksgiving Break (Wed, Nov 25, 2026 to Mon, Nov 30, 2026), IES: Christmas Break (Thu, Dec 24, 2026 to Fri, Jan 1, 2027), No School - Winter Break (Thu, Dec 24, 2026 to Fri, Jan 1, 2027), Spring Break (Fri, Mar 26, 2027 to Fri, Apr 2, 2027), IES: Spring Break (Fri, Mar 26, 2027 to Fri, Apr 2, 2027).
- First day of school
- Tue, Aug 25, 2026
- Last day of school
- Fri, Jun 4, 2027
- IES: Thanksgiving Vacation
- Wed, Nov 25, 2026 to Mon, Nov 30, 2026
- No School - Thanksgiving Break
- Wed, Nov 25, 2026 to Mon, Nov 30, 2026
- IES: Christmas Break
- Thu, Dec 24, 2026 to Fri, Jan 1, 2027
- No School - Winter Break
- Thu, Dec 24, 2026 to Fri, Jan 1, 2027
- Spring Break
- Fri, Mar 26, 2027 to Fri, Apr 2, 2027
- IES: Spring Break
- Fri, Mar 26, 2027 to Fri, Apr 2, 2027
- Teacher In-Service Day - No School for Students
- Thu, Aug 20, 2026 to Fri, Aug 21, 2026
- Labor Day- No School, Office Closed
- Mon, Sep 7, 2026
- No School - Labor Day
- Mon, Sep 7, 2026
- No School for Students - Columbus Day
- Mon, Oct 12, 2026
- Teacher In-Service Day - No School for Students
- Mon, Oct 12, 2026
- Parent/Teacher Conferences - No School for students K - 12, PreK Students are in session
- Mon, Nov 2, 2026
- IES: Office Closed
- Thu, Nov 26, 2026 to Fri, Nov 27, 2026
- IES: Christmas Classroom Parties
- Wed, Dec 23, 2026
- IES: Office Closed
- Thu, Dec 24, 2026 to Fri, Jan 1, 2027
- No School - MLK Day
- Mon, Jan 18, 2027