This publication is intended as a reference document for designers of public school facilities. Its purpose is to provide descriptions of school science programs and the facilities that can support them. It provides an initial understanding of the nature and purposes of instructional programs around which facility designs may evolve. Some aspects of all science programs and facilities which are similar in nature are described in the introductory portions of this guide. Subsequent sections focus on the peculiar requirements of individual courses or program areas. Sample floor plans supplement and clarify printed descriptions and are not intended for direct replication within facility designs. Since it is a policy of the National Science Teachers Association that classes greater than 24 students in size pose a potential safety risk, sample plans shown in this guide are designed accordingly. (EV)