Back when I was in High School a few years ago, we had the option of having some healthy things along with the garbage, but there was a problem with it.
Salads would cost $3.50-$4.00. Fresh fruits/veggies as a snack would be $1.50.
2 slices of greasy as pizza = $1.50
Heart attack burrito that was loaded up with beef, beans, cheese, and some sour cream sauce = $1.25
Also, anyone that had the reduced/free lunch would get the most damned awful food that I've seen, but hey... they also had fresh orange/pear slices if anyone wanted to complain about it.
I usually just made myself lunch 20 minutes before I went to school.