Even though I have never had a child in the local schools ... I have complained loudly and bitterly to all who will listen about the garbage fed to children in the cafeterias of the public schools. Fried this, fried that, chicken nuggets, everything heavy on "starches" [carbohydrates] ... pizza, hamburgers, sugary sweet rolls and/or desserts, sodas or other sweetened drinks instead of milk ... no fruit, no vegetables [french frys do NOT count] ... and, in this poor county, I know that some children eat both breakfast and lunch at school and go home to indifferent parents and no proper meal at night.All my ranting has accomplished only one thing. The local newspaper has stopped publishing menus for the schools.
You are not seeing obese/chubby homeschooled children because those are children of engaged parents who put a great deal of thought into managing their children's lives. Many parents of children in public schools see their children only as an inconvenience to be fobbed off on the schools.