They're not doing my job as a parent well enough!
When I was in public school (some moons ago) not only did we have our choice of what was on the 'menu' but we also had alternative choices from a salad bar, a la carte menu etc. My Momma and Daddy taught me well enough to know that eating a salad from the salad bar occasionally was probably a good thing to do.
Of course....it took my Momma and Daddy a LOT of work to teach that to a teenager who thought the best thing in the world was having the option to order pizza and egg rolls off the menu every other day.
On this matter we do agree: School lunches, as drawn up, suck.