Reports on course revisions made on the basis of input from discussions with chemistry teachers and pupils, a questionnaire administered to chemistry teachers in 200 schools, and details of the performance of candidates on the Nuffield 0-Level examination. Revised materials include materials for the pupil, for the teacher, and the exam. (GS)

Describes an attempt to solve curriculum development problems through the formation of resource cooperatives to share the design, production, and evaluation of learning schemes. (GS)