Cobb County School District 2025 Calendar. 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. The cobb board of education voted thursday night to hold the property tax millage rate for schools added reserve funds to the adopted fiscal year 2025 budget.

Information about each school’s ceremony can be accessed by clicking on. The start date is 1 day earlier.