Cobb County Calendar 2025 2026. The cobb county school calendar for the 2025 to 2026 school year begins on monday, august 4, 2025 and ends on wednesday, may 20, 2026. State and national testing dates.
The cobb county school calendar for the 2024 to 2025 school year begins on thursday, august 1, 2024 and ends on wednesday, may 21, 2025. The school year begins on thursday, august 1, 2024, and ends on wednesday,.