Hope Green has two children in school, she told ABC News "the last thing they need is the school to now step in. You're too skinny, you're too fat," she said.

But parents are afraid the letters will put more pressure on kids, many of which are already preoccupied with their body image.

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Jo'wan Bellamy taught in the GNETS program for 17 years and recently transferred to Atlanta’s new behavioral program at Crawford Long Middle School. (Arvin Temkar/AJC)

Credit: arvin.temkar@ajc.com