I have a graduated daughter and a son in HS and between the two, they have purchased school lunch maybe 10 times, total.  The rest has been packed lunch.  We control what they eat that way.  Both are athletes so they wanted to eat well too, so that allowed us to focus the food toward performance.  I think the glaring misunderstanding of school lunches and the student population is that most school lunches suck.  It's pre made, warmed up garbage from Sysco and US Food Service.  I agree with RadirD, parents should take more control and stop leaving it to the government to be foster parents.  It's you who has a misunderstanding of school lunches.