There has been growing interest in recent years in the influence of tests on teaching and learning - a phenomenon commonly referred to as 'washback'. Despite persistent assertions about its nature and scope, empirical studies investigating test washback are still limited in number, and few of these make use of both qualitative and quantitative methods in washback research. This volume presents a study of how the introduction of the 1996 Hong Kong Certificate of Education in English - a high stakes public examination - impacted on classroom teaching and learning in Hong Kong secondary schools. The washback effect was observed initially at the larger 'macro' level, among different stakeholder groups within the Hong Kong educational context; and also at the more local 'micro' level, in terms of teachers' attitudes, teaching content and classroom interactions. This study: provides a theoretical background to the washback concept, discusses the need for empirical investigation of washback, describes the use of a mixed methodology approach in washback research, offers insights into the role of tests as agents of innovation and change in the classroom and broader educational context. This volume will be of particular relevance to language test developers and researchers interested in the consequential validity of tests; it will also be of interest to teachers, curriculum designers, policymakers and others in education concerned with the interface between language testing and teaching practices/programs. Book jacket.