At Nampa High School, every day is pizza day. I ate two to three slices of horrid Sysco pizza every day I actually attended high school. I don't remember kindergarten, but I know I ate astronaut food first through fifth grade. The "puncture with fork" lunches made of peas and salisbury steak substitute.
*edit to answer original question! I'm consider once in awhile once a month, depending on what it is.