Here in Australia the school's are really trying very hard to have foods that are less in fat and sugar. As there is a big problem these days with children becoming obese and there is a higher risk of these children ending up with Type 2 Diabetes.
Also now in most school's here the teachers are trying a program that see's the children having more exercise time, meaning that they do more sports activities and such. All this makes alot of sense as children these days aren't as active as we were as children. The children these days rather play computer games and or watch TV then to go outside and ride their bike or go and play with their friends outside if you know what I mean!!
Also, it's up to parents to make sure their children are eating the right foods at home too. Try limiting take-away foods(Junk foods) to maybe once a week. And when you do get take-away you can get foods that are more healthy that say going to McDonalds or KFC.
Some suggestions would be: Thin crust pizza's from a Italian Pizza shop(not the likes of Pizza Hut). Or Pasta with a tomato based sauce not creamy sauces. If you have to have hamburgers go to your local take-away shop and buy their hamburgers as they have less fat in them than the likes of McDonalds!!
Anyway, when it comes to your children's health you should always want only the best for them. Lots of fresh foods like, fruit and veg's!!
By the way, just so you know I am Diabetic myself and I wouldn't wish this on anyone especially children. TAKE CARE. LOVE KELLY.