A high school teacher in Georgia was placed on administrative leave for allegedly posting a message in her classroom that stated the Confederate flag stands for marrying your sibling.

A student at Hephzibah High School in rural Richmond County reported to her mother that the teacher put a photo of the flag on a whiteboard that was accompanied by the text “A sticker you put on the back of your pickup truck to announce that you intend to marry your sister. Think of it like a white trash ‘Save the Date’ card.”

Melissa Fuller, the mother, posted about the incident on Facebook, she told CBS affiliate WRDW.

“A lot of [the discussion] is that it’s not morally correct. It’s unethical,” Fuller told the station. “It’s just something you don’t want to discuss today in today’s world and especially inside of a classroom.”

Fuller added that her daughter was once given a suspension for wearing a Confederate belt buckle to school.

Fuller said her issue was with the text, not the flag.

“With it being such a rough area, why would you put that our there to a class discussion that could have turned very ugly?” Fuller said.

The Richmond County School System said the teacher’s behavior was “unacceptable.”