For perspective: I come from a country where “cafeteria” food at school is good and affordable (most is less than the equivalent of 5-10 USD max and it’s not slop, it’s actual food), but it’s not an obligation for everyone since it’s up to the student if they want to buy something or bring their own lunch.
The “cafeteria” in my school isn’t a typical American one, rather it’s closer to a canteen where they sell food you can purchase from cup noodles, fried stuff, sandwiches, baked goods, etc. also appliances like a kettle or microwave are available in the dining hall for students to heat up left overs if they wanted.
The thing I tend to notice from American schools (according to US movies, there’s bias whether it’s true or false) is that they tend to depict kids always heading for the cafeteria for recess or lunch picking up whats available instead of bringing their own food from home (left overs from dinner), why is that the case?


Movies don’t always do a great job of depicting things. I imagine they might skew towards depicting practices that are common in southern California, or where the creative team grew up. If the cafeteria set on the back lot is shaped a certain way, re-dressing it to change to another style might not make sense for your budget.
It’s going to vary based on private/public, state, and then local school jurisdiction, wealth of the community, and wealth of the family.
My school experience had a mix of:
Most tables would be a mix of these choices. Some tables might only have kids buying items, or only bringing items from home. In one friend group it might be considered lame to buy lunch, or lame to have something packed by a parent. In some groups and age brackets trading might be prolific, rare, or non-existent.