Clay County School Calendar 2025-25. 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 gcs calendar committee meets annually and normally provides a recommended calendar to the administration for the following school year.

6, 2025, which was a designated makeup day, and feb. 17, 2025, which will be a hurricane makeup day.