You don't have to get preachy Liz, I will.
I believe that the outreach you are calling for needs to be at the level of the parents.
The children learn all about healthy eatting habits at school and have a great understanding and a desire to eat healthy.
However, all the education in the world at the level of the children will not fix what is being purchased by the parents and allowed at school by the parents adults in charge.
Unfortunatly, most adults do not understand what a healthy food is. A healthy food is food from the earth (plant & animal). It is not something that was invented in a lab somewhere and is grown in large vats in a factory. Low calorie, fat free, sugar free does not equal healthy.
The children will eat what the parents give them. End of story. Parents choice.
here are what I call (non original) bumper sticker philosophies that all parents need to embrace. They will go a long way in combating obesity in childhood:
~Eat the Earth~
~Be a human doing, not a human being~
~HFCS = Hyper Fat Child Syrup~
~Just say NO Transfats~
~Do what you should~
Told you I could get preachy. Anyway, hope this helps