This chapter on curriculum adaptation and development is taken from a guide to designing, implementing, and evaluating instruction and services for students with disabilities. It provides an overview of major curriculum options and systematic processes for selection, adaptation, and design of a curriculum for students with disabilities. Two major curriculum options are identified--the standard curriculum of general education and a functional orientation. The role of the Individualized Education Program in curriculum planning is reviewed. Common formats for curriculum materials (such as skill sequences and conceptual mapping) are discussed. The steps involved in deciding whether to adapt existing curriculum materials or design a new curriculum are outlined, followed by the steps involved in designing a new curriculum if that is determined to be necessary. Figures provide a list of curriculum options for special education, a continuum for curriculum planning, and a curriculum evaluation guide. (Contains 19 references.) (JDD)