Does all of the USA and UK have school provided lunches? Here, where I am (Canada), schools don't provide a lunch to the students, and the cafeteria food that c

Does all of the USA and UK have school provided lunches? Here, where I am (Canada), schools don't provide a lunch to the students, and the cafeteria food that can be purchased is quite unhealthy (pizza, fries etc.). I'm in high school right now, which might be why it's different, but I don't remember being provided a lunch from the school in elementary school either.