Warning letters from schools that a child is overweight isn't helping stop the childhood obesity crisis in the US, a new study found.
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School warnings about children's weight don't work, study says
The letter or report card is from your child's school, but this grade doesn't have anything to do with school performance or behavior. Instead, it's a measure of your child's body mass index or BMI -- designed to warn you when your child is overweight or obese.
