Perhaps you mean the home-fed? They will be treated as the other nonconformists, the home-schoolers. They'll need a licence and a culinary degree before they can fix their child food.
Those lunch boxes and paper sacks will either be banned or inspected.
In my state, PA, you need a high school diploma to homeschool. You also need to submit a curriculum plan to the school, a notarized affidavit too. Then you are required to keep a running log documenting 900 hours from August to May; at the end of the 900 hours you must take it to the school and have it examined and approved (or rejected, in which case you had better put the child in school at once or else they can contact CPS and bring charges against you for truancy). You also have to report to the school nurse about regular physical and dental exams. Vision exams in some grades. Vaccinations. Oh, and in some grades you have to have the child take state tests. This goes on until they're 17, the age at which compulsory attendance ends. Even after that, they can't get employment without the permission of the Superintendent of Schools, until they are 18.
I think that's all so far...but considering all that, I don't think having to report approved meals is too much of a stretch.