I am glad that you are feeling better today. Good health is very important.
They might have to find some other source of calcium for the children, if they won't drink unflavored milk. Food has changed over the years. In days of yore, people seemed to just stay naturally thin. Their appetite told them when they had enough to eat. Nowadays, the food is different. If people eat until they are full, many tend to gain weight. Most adults are overweight, and maybe 1/3 are obese. Today, many people have to count calories, and only eat until the numbers add up to their daily quota.
Research indicates that is is mostly the educated professionals who stay trim. I theorize this may partly be because they have the math skills to keep a running tally of how many calories they have eaten that day. I don't know if simply banning chocolate milk in schools will get the job done. They should teach children how to count calories. Warn children that food has changed, and they are likely to gain weight if they don't count how many calories they have eaten that day.
Anyway, may the Lord bless you.