Cobb County Schools Calendar 2025. The school year begins on thursday, august 1, 2024, and ends on wednesday, may 21, 2025. Community news , schools/education tagged:
The marietta city school calendar for the 2025 to 2026 school year begins on friday, august 1, 2025 and ends on friday, may 22, 2026. The cobb county school year typically ends on a wednesday to provide enough time to schedule graduation ceremonies.