Says CBS News:

Authorities say a 14-year-old has been wounded in a shooting at an Atlanta middle school and a suspect has been taken into custody.

Atlanta police spokesman Carlos Campos says the wounded student has been taken "alert, conscious and breathing" to Grady Hospital... Atlanta Fire Cpt. Marian McDaniel says the teen was shot in the head. McDaniel says a teacher suffered minor cuts and bruises, but was treated on the scene about 2 miles south of downtown.

For now, the shooting suspect has been "tentatively identified as a student" and has been taken into custody.