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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The Midtown Atlanta skyline is shown in the background as an employee works in Cargill's new office, Jan. 16, 2025, in Atlanta.  (Jason Getz/AJC)

Credit: Jason Getz / Jason.Getz@ajc.com