This document describes the development and implementation of a year-round school program for the Gresham, Oregon, elementary school district. The 45-15 plan, which divides students into four groups and gives each group a three week vacation after every 45 class days, is modeled after the Valley View 45-15 Plan. The plan was initiated after increased enrollments and the failure of several district bond and tax elections had made increased use of existing facilities imperative. The first part of the document describes the historical beginnings of the problem -- bond issue defeats, enrollment trends, voter opinion, and alternative methods studied. The document then describes (1) the formation, activities, and recommendations of an advisory committee set up to help develop and implement a year-round program; and (2) school board action on the advisory committee recommendations. In the last two sections of the document can be found a school calendar, some information letters and sheets, and various newspaper articles about the program. (Charts and clippings may reproduce poorly.) (DN)