The incident occurred on Tuesday, September 26, at Orrs Elementary School in metro Atlanta, according to CBS46.
Jason Newberry, age 10, said that he and a classmate put their hand over their heart while they were reciting the Pledge of Allegiance. The classmate was not named.
He said that for the rest of the day, "Me and him got called KKK, Nazi, and we just kept getting bullied the whole day."
Newberry said that he wasn't aware of the controversy over the American flag until a second-period teacher showed them a news clip of NFL players kneeling during the national anthem.
The teacher, who was not identified, created a poll about what was right or wrong with 'taking a knee' and passed it out to the students in her class.
She also told her students that she would never stand for the Pledge of Allegiance, and that if she did, she "wouldn't mean it."
A spokesman for the Spalding School District told CBS46 that the assignment was supposed to be a lesson on First Amendment rights. No comment was made about whether the teacher was disciplined, but she did apologize.
In a letter that was sent home to parents on Wednesday, the teacher said, "I apologize for expressing my views to my students. I recognize that while this was not a one-sided lesson, the topic itself and the expression of my views were not appropriate, my intentions were well-meaning."
In response, many parents were upset, and some said that they would be standing with their children Thursday morning in front of the school's flag pole when the National Anthem was recited over the loudspeaker.