Police spokeswoman Tabitha Pugh said 36-year-old Donald Crosby was arrested Monday in the central Georgia city of Warner Robins.
Crosby and supporters picked the opening day of classes to protest against the pitchfork-wielding mascot. Crosby, of Kingdom Builders Church of Jesus Christ, says his son attends the school and he doesn't want him exposed to the name's devilish connotations.
Crosby was charged with picketing without a license and disorderly conduct. He was released on bond. He did not immediately return a telephone call seeking comment.
School officials say the mascot honors a World War II fighter squadron nicknamed the "Screamin' Demons."