The Instructional Objectives Exchange (IOX) collected for several subject areas objectives and measurement items based upon curricular material either submitted by teachers, schools, and school districts, or generated by the IOX staff. Contained in the language arts collection are 194 objectives and related evaluation items for grades 4-6. The objectives are organized first by grade level and then into grammar (phonology, morphology, and syntax), mechanics and conventions, semantics, etymology, lexicography, reference skills, literature, oral language, and composition. The grammar category includes objectives which conform to the traditional, the structural, and the transformational approach. The objectives are stated in operational terms and are identified by a category and a subcategory which limit and define them. The behavioral aspect and the content of each objective have been selected as a means of requiring the student to master processes and concepts central to the acquisition of language arts. Each objective is accompanied by a sample measurement item designed to test the student's acquisition of the desired behavior. Specific answers to the sample items or criteria for judging the adequacy of the response have been provided. (TO)