This article examines issues of writing instruction and assessment as they relate to an approach to English language education that has been developed in Australia. The approach, put forward by proponents of genre theory, is underpinned by the argument that it is essential for all teachers, and especially English teachers, to have a 'metalanguage' about language education. The expectation is that such a metalanguage makes it possible for teachers and students to develop shared understandings of how written and spoken language works in their various forms. The related argument is that the teacher represents an authoritative (as distinct from authoritarian) language user in the classroom and is responsible for teaching the linguistic characteristics of texts as well as the relationship between texts and the cultural and social contexts in which they are produced and received. In this article I examine the 'genre' position and consider its relevance to the business of teaching, learning and assessing in the English classroom.