Face coverings will be optional during outdoor activities, such as physical education classes and recess, the district said.
About 50,000 students attend Atlanta Public Schools.
Atlanta's policy is roughly the same as two other larger suburban Atlanta school districts — DeKalb County and Clayton County, which have said they will require all students and employees to wear masks at all times indoors.
But the other seven of Georgia's 10 largest school districts have either dropped their mandatory mask policies or never had them. Those dropping mask mandates include Gwinnett County, the state's largest, as well as the Cobb County, Fulton County, Henry County and Savannah-Chatham school districts.
Two of Georgia's 10 largest school districts, Forsyth County and Cherokee County, never required masks.
In all those districts, students and teachers can wear masks if they want, but are not required to do so.
A few districts are trying to split the difference, requiring masks in some situations but not in others. The Athens-based Clarke County school district is requiring all students on buses and all students in prekindergarten through sixth grade to wear a mask, at least indoors. But all vaccinated employees at any level and vaccinated students in grades 7-12 will not have to wear masks.