The McKinney ISD Board of Trustees approved the 2025–2026 MISD school calendar at their regular meeting on Monday, December 16. The 2025-2026 school year will begin on August 12, and will conclude on May 21, with graduation for all three high schools planned for May 22 at the Credit Union of Texas Event Center in Allen.

Both the Fine Arts calendar and the Athletics calendar are located on each of their respective department websites. The Athletics calendar information is broken into sections by team.