WAC 392-129-065
WAC 392-129-065. Definition—Unforeseen
As used in this chapter, "unforeseen" means the extent that a reasonably prudent person could not have anticipated, prior to August 1st of the preceding school year, that natural events, mechanical failures, or actions or inactions by one or more persons would probably occur during the current school year due to the occurrence of an event or circumstances during a preceding or prior school year.