The Report of the Working Committee on College Proposals for the Australian Capital Territory (Campbell Report, 1972) led to far reaching changes in senior secondary education. Hawker College, opened in 1976, is one of eight resulting government secondary colleges. The writer, a member of the Committee, has been Assistant Principal (Curriculum) at Hawker since its inception. This field study examines the dynamics, nature and achievements of curriculum change at Hawker, from the planning year in 1975, to 1980. Data includes student surveys and interviews; discussions with teachers, administrators and counsellors; college curriculum documents and the writer's own observations. The Campbell Report's educational philosophy was eclectic, and 'progressive'. Strengths and weaknesses of the Working Committee's analyses and recommendations are assessed. Seven curriculum aims 'clusters' are synthesized: four concerned with individual development, and three with the student as an effective, contributing member of society. Hawker has had significant success in promoting students' individual development. It has been markedly less successful in preparing students to function within, and contribute to, society.