This book is concerned with language as it is used by the teacher, as it affects the learner, and as it can function to integrate the curriculum. Douglas Barnes, in "Language in the Secondary Classroom," discusses the student-teacher language interaction in 12 sample lessons, and analyzes the importance upon student learning of the languages used by the classroom teacher. Specific topics examined are the kinds of questions put forth by the teacher, the participation asked of the pupils, the language used in instruction, the language used in social control, and the relationship of language to other activities and media. In "Talking to Learn," James Britton analyzes several taped talking sessions of secondary school pupils to demonstrate how learning takes place during the act of conversation. Harold Rosen introduces "A Language Policy Across the Curriculum" guidelines suggested by the London Association for the Teaching of English to help teachers of all subjects clarify their roles in encouraging children to become confident users of language in reading, writing, and talking. (JM)