Increasing the vocabulary knowledge of young adolescent and adolescent students has been a focal point of educational research and many teacher professional development initiatives. Yet many teachers continue to use traditional, but generally ineffective, methods of classroom-based vocabulary instruction. Synthesizing the literature around the general topics of vocabulary instruction, classroom discourse, and teacher talk, this review provides a comprehensive and critical examination of instruction that supports vocabulary learning in older students with a particular focus on practices that promote productive discussions of content.