The only reason there is chocolate milk in the school lunchroom is because decades ago someone realized adding sugar to milk that was going bad would cover the taste. Follow the money.
They might also stop teachers from handing out bowls of candy to keep the little hellions from stabbing each other.
Of course, eliminating chocolate milk at school isn’t going to help eliminate all the junk food at their houses.
That does not stop the smell of milk gone bad.