as locust vally is about american artist ray johnson, 'correspondence school' refers to the new york correspondence school. In the early sixties, long before there was an Internet, Johnson's greatest performance work - the New York Correspondence School, an international network of poets and artists who used the low-tech medium of the postal system - freely exchanged artwork, objects and anything else deemed worthy by it's participants, many of whom became the cultural movers and shakers of the next several decades; they created "mail art". by this they protested against the market system: they just gave their art away via the correspondence school.see ray johnson for more information about ray johnson.