Grew up in a suburban part of town that was just normal public schools. No rich ivy walls, a mix of kids walking or bussing in from mostly just normal homes. Some came from nicer neighbourhoods, and some from lower income apartments or low budget rental townhouse complexes.
All 3 schools I went to (elementary, middle and high) had zero free food. Bring your own grub. At best, high school had a small kitchen where you could buy pizza slices or teachers get a coffee. And a pop vending machine. If you wanted it you had to buy it. No real meals like you see on TV or movies with lunchlady Doris spooning full meals onto trays like an assembly line. But maybe it's common in US schools. Elementary and middle schools were basically the same. You could buy small cups of juice or these oddly giant ass cookies for like 35 or 50 cents. Thats it.
We all turned out fine. The kids from the poorer housing complexes figured out how to bring their own lunch. So it cant be that hard why modern day numbnut families cant do the same.