Standardized tests demand Standard English, but secondary students (grades 6-12) come to school speaking a variety of dialects and languages, thus creating a conflict between students' language of nurture and the expectations of school. The purpose of this text is twofold: to explain and illustrate how language varieties function in the classroom and in students' lives and to detail linguistically informed instructional strategies. Through anecdotes from the classroom, lesson plans, and accessible narrative, it introduces theory and clearly builds the bridge to daily classroom practices...