Continued from page 1

Researchers warn that obesity is not always the result of children eating too many calories. A previous study by the nonprofit center reported that 44 percent of children studied consumed calories below daily minimum requirements, but nearly one-third were still obese. Seven percent screened positive for type 2 diabetes.

Mark Davis, the school’s principal, said getting consent from parents hasn’t been a problem. He suspects the small number of parents who withhold consent don’t understand the project, perhaps thinking it limits what their child can eat at school.

“Nothing in the program says they can’t have something,” Davis said. “It just says we’re tracking what it is.”