Sumner County Schools Calendar 2025-26. Sumner county schools commits to growing learners who are college and career ready through quality instruction, effective use of resources, building a collaborative culture, and strong. Starting october 21, all high school courses will.

The last day of school will be friday, may 22, 2026. Sumner county schools commits to growing learners who are college and career ready through quality instruction, effective use of resources, building a collaborative culture, and strong.