A description of the Nuffield approach to Chemistry for students 11-16 years of age, a discussion of the possible entry points to the materials provided for the five years of British secondary schools before the "O"-Level examination, an account of the type of examination to be expected, and estimates of the cost of introducing the program to a British school, introduce a description of the course and of the materials produced by 1968. The materials for teachers include guide books, a set of collected experiments, and descriptions of the basic and optional courses that may be taught. Pupil materials include a data book, four books of laboratory investigations, and 41 short background books. Film loops, charts, and a set of diffraction grids are also described. Addresses of publishers who distribute Nuffield materials in a number of countries are listed. (AL)