Prepared as part of a series applying recent research in oral and written communication instruction to classroom practice, this booklet deals with the integrated language arts curriculum. Noting the disparity between what is advocated for and what is practiced in language arts teaching, the first section of the booklet describes an integrated kindergarten classroom and identifies two major approaches to extending integration throughout the elementary and secondary school curriculum. The second section discusses three model programs featuring curriculum integration: the Individualized Language Arts project from Weehawken, New Jersey; the Academic Improvement through Language Experience program developed in Kenosha, Wisconsin; and the Wisconsin Alternative Curriculum Design, based on both the five functions of communication--informing, expressing feeling, imagining, ritualizing, and controlling--and the five communication contexts--intrapersonal, dyadic, small group, public, and mass communication. The third section discusses the advantages of an integrated curriculum, including the encouragement of a better language arts balance; the promotion of audience awareness; the encouragement of experiential learning; and the provision of rich, varied language experience. (FL)