Describes seven research-based teaching practices for developing complex language and literacy skills across grade levels and disciplines. Contents:Framing the teaching of complex academic language and disciplinary literacy -- Designing activities and lessons -- Clarifying, modeling, and guiding -- Using complex texts -- Lessons focused on using complex texts -- Fortifying complex output -- Lessons focused on fortifying complex output -- Fostering academic interactions -- Lessons that focus on fostering academic interactions -- Coaching, collaboration, & capacity -- Conclusion.