This description, based on experience with multiunit organization in Wisconsin and Ohio schools, constitutes a structural and procedural model for elementary school instruction and related environment. A background appraisal, provided as a context in which to view the new organization, takes the form of a paralleled itemization of the functions of the elementary school today and in the decades ahead. The functions are divided into three categories: the instructional system; preservice and inservice education; and innovation, development, and research. The formal structure of the multiunit plan is described as an organizational hierarchy operating at three levels: (1) at the classroom level, Instructional and Research (I & R) units consisting of a unit leader, two or more regular staff teachers, one or more aides or secretaries, and in some cases an intern; (2) at the building level, the Instructional Improvement Committee (principal and unit leaders); (3) at the systemwide level, the Policy Committee (all staff personnel) chaired by the superintendent or his designee. Operational procedures for the three units are described, and job descriptions are detailed for the principal, unit leader, teacher, intern, and instructional secretary and teacher aides. Implications of the multiunit approach are discussed with reference to individually-guided education, teacher education, and research and development. (JS)