There is a federal program school lunches that give reduced or free school lunches at school based on family income. Schools are also given extra education money based on the % of students that qualify for free or reduced lunchesMy work, my church, and various other entities in the area all have drives for supplies. I believe the thrift stores help with clothing to some. I don't know of anything with the lunches, but there may be a program in place.
My neighbor works for a school, and they sell gift cards to several different places. Those places then, in turn, donate money back to the school. I got one to the grocery store, so I fill up the gift card, and then buy groceries. It's only an extra step or two for me, and it provides money to the school. It looks like some of that money is being used to house international students.
Were I live other places also use this criteria for other things like discount or free sports or classes at our local recreation center like the YMCA but not related to them